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1

Schultze, J. W. "Electrochemical Materials Science". Electrochimica Acta 45, nr 20 (czerwiec 2000): 3193–203. http://dx.doi.org/10.1016/s0013-4686(00)00413-8.

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2

Kolbasov, Gennadii, Valeriy Kublanovsky, Oksana Bersirova, Mykola Sakhnenko, Maryna Ved, Orest Kuntyi, Oleksandr Reshetnyak i Oleg Posudievsky. "ELECTROCHEMISTRY OF FUNCTIONAL MATERIALS AND SYSTEMS (EFMS)". Ukrainian Chemistry Journal 87, nr 3 (23.04.2021): 61–76. http://dx.doi.org/10.33609/2708-129x.87.03.2021.61-76.

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The work is presented by the V. I. Vernad­skii Institute of General and Inorganic Chemi­stry of the National Academy of Sciences of Ukraine for the State Prize of Ukraine in the field of science and technology. A new paradigm of the processes of electrochemical synthesis of functional materials has been created on the basis of the proposed theory of discharge-ionization of electrochemically active complexes and the laws of correlation between the functional properties of coatings and the fundamental characteristics and parameters of electrochemical kinetics. New approaches of surface engineering to the electrochemical synthesis and processing of materials that are capable of operating under extreme thermomechanical conditions under the simultaneous action of an aggressive medium have been developed. Innovatively promising technologies have been proposed for the formation of nanomaterials of new generation based on superalloys, metal oxide composites, photosensitive hetero- and nanostructures, electrically conductive polymers and their composites, etc. The main research directions in this work concern electrochemistry, both directly the me­thod for the synthesis of new materials and the study and design of the electrochemical pro­perties of materials / coatings / nanoparticles that cannot be obtained by other methods. The aim of the work was to develop the theoretical foundations of directed synthesis and to create a wide range of new competitive materials and systems on the basis of establishing the structural and functional patterns of their electrochemi­cal formation. А number of novel compe­titive electrochemical materials (electrode and electrolyte materials for electrochemical po­wer sources and supercapacitors, electro- and photocatalysts, sorption and optical materials, functional coatings, etc.) have been created as a result of the performed research. These materials are used in various fields of science and technology, namely, for alternative po­wer ge­neration, electrochemical power sources, nano- and microelectronics, electrochromic systems, electrocatalysis, ecosensorics, electro­chemical synthesis of commercial products, photoelectrochemical systems, corrosion protection. The number of publications: 700, including 30 monographs (7 of them published abroad) and 39 chapters in collective monographs (30 of them published abroad), 36 textbooks (manuals), and 500 articles (350 of them published in foreign periodicals). The total number of refe­rences to the publications of the authors/h-index/i10-index (regarding the whole work) according to the databases is, respectively: Web of Science, 1856/21/52; Scopus, 2185/22/71; Google Scholar, 4903/33/148. The novelty and competitiveness of the technical solutions are protected by 33 valid patents (7 patents of Kazakhstan, China, USA). Eight doctoral dissertations (DSc) and 47 candidate's dissertations (PhD theses) on this subject matter have been defended.
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3

Szunerits, Sabine, Sascha E. Pust i Gunther Wittstock. "Multidimensional electrochemical imaging in materials science". Analytical and Bioanalytical Chemistry 389, nr 4 (30.06.2007): 1103–20. http://dx.doi.org/10.1007/s00216-007-1374-0.

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4

Miller, J. R., i P. Simon. "MATERIALS SCIENCE: Electrochemical Capacitors for Energy Management". Science 321, nr 5889 (1.08.2008): 651–52. http://dx.doi.org/10.1126/science.1158736.

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5

Kurihara, Kazue. "Surface forces measurement for materials science". Pure and Applied Chemistry 91, nr 4 (24.04.2019): 707–16. http://dx.doi.org/10.1515/pac-2019-0101.

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Abstract This article reviews the surface forces measurement as a novel tool for materials science. The history of the measurement is briefly described in the Introduction. The general overview covers specific features of the surface forces measurement as a tool for studying the solid-liquid interface, confined liquids and soft matter. This measurement is a powerful way for understanding interaction forces, and for characterizing (sometime unknown) phenomena at solid-liquid interfaces and soft complex matters. The surface force apparatus (SFA) we developed for opaque samples can study not only opaque samples in various media, but also electrochemical processes under various electrochemical conditions. Electrochemical SFA enables us to determine the distribution of counterions between strongly bound ones in the Stern layer and those diffused in the Gouy-Chapman layer. The shear measurement is another active area of the SFA research. We introduced a resonance method, i.e. the resonance shear measurement (RSM), that is used to study the effective viscosity and lubricity of confined liquids in their thickness from μm to contact. Advantages of these measurements are discussed by describing examples of each measurement. These studies demonstrate how the forces measurement is used for characterizing solid-liquid interfaces, confined liquids and reveal unknown phenomena. The readers will be introduced to the broad applications of the forces measurement in the materials science field.
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6

Landolt, D. "Electrochemical and materials science aspects of alloy deposition". Electrochimica Acta 39, nr 8-9 (czerwiec 1994): 1075–90. http://dx.doi.org/10.1016/0013-4686(94)e0022-r.

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7

Mitchell, James B., Matthew Chagnot i Veronica Augustyn. "Hydrous Transition Metal Oxides for Electrochemical Energy and Environmental Applications". Annual Review of Materials Research 53, nr 1 (3.07.2023): 1–23. http://dx.doi.org/10.1146/annurev-matsci-080819-124955.

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Hydrous transition metal oxides (TMOs) are redox-active materials that confine structural water within their bulk, organized in 1D, 2D, or 3D networks. In an electrochemical cell, hydrous TMOs can interact with electrolyte species not only via their outer surface but also via their hydrous inner surface, which can transport electrolyte species to the interior of the material. Many TMOs operating in an aqueous electrochemical environment transform to hydrous TMOs, which then serve as the electrochemically active phase. This review summarizes the physicochemical properties of hydrous TMOs and recent mechanistic insights into their behavior in electrochemical reactions of interest for energy storage, conversion, and environmental applications. Particular focus is placed on first-principles calculations and operando characterization to obtain an atomistic view of their electrochemical mechanisms. Hydrous TMOs represent an important class of energy and environmental materials in aqueous and nonaqueous environments. Further understanding of their interaction with electrolyte species is likely to yield advancements in electrochemical reactivity and kinetics for energy and environmental applications.
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8

Chen, Ji, Chun Li i Gaoquan Shi. "Graphene Materials for Electrochemical Capacitors". Journal of Physical Chemistry Letters 4, nr 8 (kwiecień 2013): 1244–53. http://dx.doi.org/10.1021/jz400160k.

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9

Huang, Jian Yu, Li Zhong, Chong Min Wang, John P. Sullivan, Wu Xu, Li Qiang Zhang, Scott X. Mao i in. "In Situ Observation of the Electrochemical Lithiation of a Single SnO2 Nanowire Electrode". Science 330, nr 6010 (9.12.2010): 1515–20. http://dx.doi.org/10.1126/science.1195628.

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We report the creation of a nanoscale electrochemical device inside a transmission electron microscope—consisting of a single tin dioxide (SnO2) nanowire anode, an ionic liquid electrolyte, and a bulk lithium cobalt dioxide (LiCoO2) cathode—and the in situ observation of the lithiation of the SnO2 nanowire during electrochemical charging. Upon charging, a reaction front propagated progressively along the nanowire, causing the nanowire to swell, elongate, and spiral. The reaction front is a “Medusa zone” containing a high density of mobile dislocations, which are continuously nucleated and absorbed at the moving front. This dislocation cloud indicates large in-plane misfit stresses and is a structural precursor to electrochemically driven solid-state amorphization. Because lithiation-induced volume expansion, plasticity, and pulverization of electrode materials are the major mechanical effects that plague the performance and lifetime of high-capacity anodes in lithium-ion batteries, our observations provide important mechanistic insight for the design of advanced batteries.
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10

Musiani, Marco. "Electrodeposition of composites: an expanding subject in electrochemical materials science". Electrochimica Acta 45, nr 20 (czerwiec 2000): 3397–402. http://dx.doi.org/10.1016/s0013-4686(00)00438-2.

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11

Simon, Patrice, i Yury Gogotsi. "Materials for electrochemical capacitors". Nature Materials 7, nr 11 (listopad 2008): 845–54. http://dx.doi.org/10.1038/nmat2297.

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12

Gollub, J. P., i L. M. Sander. "Pattern Formation in Materials Science". MRS Bulletin 12, nr 6 (wrzesień 1987): 98–100. http://dx.doi.org/10.1557/s0883769400067336.

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The growth of materials at interfaces frequently leads to patterns with length scales that can be much larger than atomic sizes. Patterns resulting from morphological instabilities occur during crystal growth and are responsible for the intricate shapes of snowflakes, dendritic crystals, and the like. They also occur during the electrochemical deposition of metals on surfaces, and during the growth of thin films by vapor deposition. Our purpose is to point out some particularly interesting connections that have come to be appreciated during the past five years between different types of pattern-forming phenomena, and to summarize some recent theoretical approaches to understanding them.The phenomenon of dendritic crystal growth, though studied for many years, is still a great challenge. As an example, we show the development of a needle crystal of ammonium bromide (NH4Br) from supersaturated aqueous solution in Figure 1. The contours are cross sections of the interface at 20-second intervals, obtained by digital image analysis. One can see that an approximately parabolic tip translates at constant speed, and that the needle crystal is apparently unstable to the development of a train of sidebranches that propagate outward from the main stem but do not move forward with the tip.
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13

Tran, Luyen Thi, Hoang Vinh Tran, Ha Hong Cao, Thuy Hong Tran i Chinh Dang Huynh. "Electrochemically Effective Surface Area of a Polyaniline Nanowire-Based Platinum Microelectrode and Development of an Electrochemical DNA Sensor". Journal of Nanotechnology 2022 (17.05.2022): 1–10. http://dx.doi.org/10.1155/2022/8947080.

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Electrochemical DNA sensors based on nanocomposite materials of polyaniline nanowires (PANi NWs) have been published in the literature. However, it is interesting that there are very few research studies related to the development of electrochemical DNA sensors based on PANi NWs individually. In this study, PANi NWs were synthesized site-specifically on a Pt microelectrode with only 0.785 mm2 area using an electropolymerization procedure. The electrosynthesis allows direct deposition of PANi NWs onto the Pt microelectrode in a rapid and cost-effective way. The good properties of PANi NWs including uniform size, uniform distribution throughout the Pt working electrode, and H2SO4 doping which improved the conductivity of the PANi material were obtained. Especially, the electrochemically effective surface area of the PANi NW-based Pt microelectrode determined in this work is nearly 19 times larger than that of the Pt working electrode. The PANi NW layer with large electrochemically effective surface area and high biocompatibility is consistent with the application in electrochemical DNA sensors. The fabricated DNA sensors show advantages such as simple fabrication, direct detection, high sensitivity (with the detection limit of 2.48 × 10−14 M), good specificity, and low sample volume requirement. This study also contributes to confirm the role of PANi NWs in DNA probe immobilization as well as in electrochemical signal transmission in the development of electrochemical DNA sensors.
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14

YE, JIAN-SHAN, GUANGQUAN MO, WEI DE ZHANG, XIAO LIU i FWU-SHAN SHEU. "UNUSUAL ELECTROCHEMICAL RESPONSE OF ELECTROCHEMICAL ETCHING ON MULTIWALLED CARBON NANOTUBES". Nano 03, nr 06 (grudzień 2008): 461–67. http://dx.doi.org/10.1142/s1793292008001386.

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Multiwalled carbon nanotubes (MWNTs) can be etched at potentials more positive than 1.7 V versus Ag / AgCl (3 M KCl ) in 0.2 M HNO 3. The electrochemically etched MWNTs show an increase in electrochemical impedance and sluggish electron transfer kinetics, and lose the electrocatalytic effects toward the oxidation of glucose, H 2 O 2, uric acid (UA) and L-ascorbic acid (L-AA). Transmission electron microscope (TEM) images reveal that the nanotube tips are cut off by electrochemical oxidation. This may lead to the degradation of electrocatalytic ability in the MWNTs. Furthermore, the current response after different electrochemically etched cycles shows that the electrocatalytic ability of the MWNTs toward different molecules can be tuned by etched cycles. For example, five etched cycles leads to the total disappearance of the oxidative response to L-AA, with the remaining over 50% of the UA current response in the L-AA and UA mixture. Thus, electrochemical etching is a simple yet novel way to tune the electrocatalytic reactivity and improve the selectivity of the MWNTs.
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15

MacDiarmid, Alan G., i Weigong Zheng. "Electrochemistry of Conjugated Polymers and Electrochemical Applications". MRS Bulletin 22, nr 6 (czerwiec 1997): 24–30. http://dx.doi.org/10.1557/s0883769400033595.

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The discovery in 1977–78 that trans-polyacetylene — (CH)x, the prototype conducting polymer (Figure 1)—could be chemically p-doped (partly oxidized) or n-doped (partly reduced) with a concomitant increase of its conductivity through the semiconducting to the metallic regime introduced new concepts of considerable theoretical and possible technological importance to condensed matter science. In 1979 it was discovered that p- or n-doping of trans-(CH)x could be accomplished electrochemically and that these processes were electrochemically reversible. Polyacetylene is the simplest example of a conjugated polymer, a polymer in which the “backbone” atoms are joined alternately by single and double bonds. All conducting polymers, “synthetic metals,” are conjugated polymers, at least in their doped forms. Other conducting polymers, including for example, poly(paraphenylene), polypyrrole, polythiophene, and polyaniline, have since been examined as electrochemically active materials. These findings have stimulated much industrial and academic interest in the electro-chemistry of conducting polymers and their possible technological applications in for example, energy storage, electrochromic displays, electrochemical drug-delivery systems, electromechanical devices, and light-emitting devices.This article will show the relationship between the doping of a conjugated polymer, the reduction potential of the polymer, and the role of “dopant” ions. These interrelationships have frequently caused considerable confusion in understanding electrochemical doping. Electrochemical synthesis of conjugated polymers and the role of cyclic voltammetry in elucidating the mechanism of electrochemical redox processes involving conjugated organic polymers will also be discussed. This article will also summarize a few selected applications involving electro-chemical properties of conjugated polymers. The coverage is intended to beexemplary rather than exhaustive. Furthermore since the electrochemistry of (CH), the “prototype” conducting polymer, has been extensively studied and comprises a relatively simple, reversible electrochemical system, it will be used to exemplify the basic concepts involved. These basic concepts can then be applied with appropriate modification as necessary to the electrochemistry of other conjugated polymers. Polyaniline will then be used to illustrate a more complex conjugated polymer electrochemical system.
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16

Wu, Zhibin, Yirong Zhu i Xiaobo Ji. "NiCo2O4-based materials for electrochemical supercapacitors". J. Mater. Chem. A 2, nr 36 (2014): 14759–72. http://dx.doi.org/10.1039/c4ta02390k.

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17

Li, Shiqi, i Zhaoyang Fan. "Special Issue: Advances in Electrochemical Energy Materials". Materials 13, nr 4 (13.02.2020): 844. http://dx.doi.org/10.3390/ma13040844.

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Electrochemical energy storage is becoming essential for portable electronics, electrified transportation, integration of intermittent renewable energy into grids, and many other energy or power applications. The electrode materials and their structures, in addition to the electrolytes, play key roles in supporting a multitude of coupled physicochemical processes that include electronic, ionic, and diffusive transport in electrode and electrolyte phases, electrochemical reactions and material phase changes, as well as mechanical and thermal stresses, thus determining the storage energy density and power density, conversion efficiency, performance lifetime, and system cost and safety. Different material chemistries and multiscale porous structures are being investigated for high performance and low cost. The aim of this Special Issue is to report the recent advances of materials used in electrochemical energy storage that encompasses supercapacitors and rechargeable batteries.
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18

Li, Gao-Ren, Han Xu, Xue-Feng Lu, Jin-Xian Feng, Ye-Xiang Tong i Cheng-Yong Su. "Electrochemical synthesis of nanostructured materials for electrochemical energy conversion and storage". Nanoscale 5, nr 10 (2013): 4056. http://dx.doi.org/10.1039/c3nr00607g.

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Liu, Chang, Jian Zhou, Rongqiu Yan, Lina Wei i Chenghong Lei. "Enzymeless Electrochemical Glucose Sensors Based on Metal–Organic Framework Materials: Current Developments and Progresses". Chemosensors 11, nr 5 (12.05.2023): 290. http://dx.doi.org/10.3390/chemosensors11050290.

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Electrochemical glucose sensors play a crucial role in medicine, bioscience, food science, and agricultural science. Metal–organic frameworks possess exceptional properties, such as large specific surface area, high porosity, tunable pore structure, high catalytic activity, open metal active sites, and structural diversity. The catalytic activity of metal–organic frameworks enables electrocatalytic oxidation of glucose without the need for enzymes. Consequently, enzymeless electrochemical glucose sensors based on metal–organic framework materials have gained much attention and have been extensively studied for glucose detection. This mini-review provides an overview of the development and progress of enzymeless electrochemical glucose detection based on metal–organic framework material–modified electrodes, including doping materials, sensitivity, detection limit, and fast response capability. With the advancement of this technology, enzymeless electrochemical glucose sensors can continuously and stably detect glucose and can be utilized in various fields, such as wearable devices.
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20

Alhalasah, Wasim, i Rudolf Holze. "Electrochemical materials science: tailoring intrinsically conducting polymers. The example: substituted thiophenes". Journal of Solid State Electrochemistry 9, nr 12 (2.08.2005): 836–44. http://dx.doi.org/10.1007/s10008-005-0024-8.

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21

Pekhnyo, Vasyl, Anatoliy Omel’chuk i Olga Linyucheva. "SCIENTIFIC ELECTROCHEMICAL SCHOOL OF KYIV". Ukrainian Chemistry Journal 88, nr 6 (27.07.2022): 71–101. http://dx.doi.org/10.33609/2708-129x.88.06.2022.71-101.

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An overview dedicates to the directions of scientific research and achieved results in the field of electrochemistry, initiated by scientific institutions and in higher educational institutions of Kyiv. Academician O.V. Plotnikov is the forerunner of the world- known Kyiv School of Electrochemistry, formed in the last century's twenties: M.I. Usanovych, V.O. Izbekov, Ya.A. Fialkov, Yu.K. Delimarskyi, I.A. Sheka, and many other scientists known to the general scientific community. O.V. Plotnikov and his followers are one of the first to attempt to combine the most progressive theoretical provisions on electrolytic dissociation, the chemical theory of solutions, and the chemistry of complex compounds for that time. World achievements of the Kyiv School of Electrochemistry were provided by the results of such fundamental research as the chemical theory of solutions, acid-base interactions (Usanovich's theory), the structure of the electric double layer (the Yesin-Markov effect, the reduced Antropov scale of potentials), physical chemistry and electrochemistry of molten electrolytes, kine­tics electrode processes, electrometallurgy, electrochemical materials science, electrochemical power engineering. Representatives of our School significantly expanded the knowledge of mass transfer in electrochemical systems with molten electrolytes (the phenomenon of the transfer of metals from the anode to the cathode). New technological processes of obtaining and refining heavy non-ferrous metals (bismuth, lead, indium, etc.), finishing metal surfaces, extraction of radionuclides, electroplating technology, and environmental monitoring have been introduced into the practice of industrial production. Research in electrochemical materials science is closely connected to solving the problems of electrochemical energy, particularly, the creation of new sources of current, including solid-state, hydrogen generators, and converters of solar energy into electrical power. The studies of electrochemical aspects of the extraction of some refractory metals from natural raw materials, the creation of new materials with specified functional properties, catalysts, and electrocatalysts, the latest galvanic coatings, electrode and electrolyte materials for chemical current sources and supercapacitors, valuable inorganic compounds, metal and carbon nanophases, corrosion inhibitors are expanding the scientific direction of elect­rochemical materials science.
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22

Fic, Krzysztof, Anetta Platek, Justyna Piwek i Elzbieta Frackowiak. "Sustainable materials for electrochemical capacitors". Materials Today 21, nr 4 (maj 2018): 437–54. http://dx.doi.org/10.1016/j.mattod.2018.03.005.

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23

Rubinstein, M. "ELECTROCHEMICAL METALLIZING OF ADVANCED MATERIALS". Materials and Manufacturing Processes 4, nr 4 (styczeń 1989): 561–78. http://dx.doi.org/10.1080/10426918908956315.

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24

Xu, Zhijie, Fangxu Hu, De Li i Yong Chen. "Electrochemical Oscillation during Galvanostatic Charging of LiCrTiO4 in Li-Ion Batteries". Materials 14, nr 13 (29.06.2021): 3624. http://dx.doi.org/10.3390/ma14133624.

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In the late 1960s, the establishment of Prigogine’s dissipative structure theory laid the foundation for the (electro)chemical oscillation phenomenon, which has been widely investigated in some electrochemical reactions, such as electro-catalysis and electro-deposition, while the electrochemical oscillation of Li-ion batteries has just been discovered in spinel Li4Ti5O12 a few years before. In this work, spinel LiCrTiO4 samples were synthesized by using a high-temperature solid-state method, characterized with SEM (Scanning electron microscope), XRD (X-ray diffraction), Raman and XPS (X-ray photoelectron spectroscopy) measurements, and electrochemically tested in Li-ion batteries to study the electrochemical oscillation. When sintering in a powder form at a temperature between 800 and 900 °C, we achieved the electrochemical oscillation of spinel LiCrTiO4 during charging, and it is suppressed in the non-stoichiometric LiCrTiO4 samples, especially for reducing the Li content or increasing the Cr content. Therefore, this work developed another two-phase material as the powder-sintered LiCrTiO4 exhibiting the electrochemical oscillation in Li-ion batteries, which would inspire us to explore more two-phase electrode materials in Li-ion batteries, Na-ion batteries, etc.
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25

Fukunaka, Yasuhiro. "Toward "Electrochemical/Materials Processing for Space Engineering" Symp". ECS Meeting Abstracts MA2022-02, nr 24 (9.10.2022): 1009. http://dx.doi.org/10.1149/ma2022-02241009mtgabs.

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Several symposium have been hosted such as “Electrochemistry in Space”, 236th ECS Atlanta(2019) and “ISRU”, Call for Papers: ACS Earth and Space Chemistry for Special Issue: Materials of the Universe : the Final Chemical Frontier(2020). However, their scopes are rather shifted to space exploration concept, primarily led by the Space Agency. Those are not geared toward training graduate students for the future space engineering using basic science, especially Space Environmental Utilization Research is not intensively covered. It is our thought that the Electrochemical Society (ECS) shall organize such an interdisciplinary education & research program collaborating with TMS society (Light Metal and Materials Processing Divisions). The research subjects on Space Energy & Resources must be newly stimulated to make recognize and support the field of Electrochemical/Materials Processing, encompassing: [1] Basic Science with Drop Tower, Rocket & ISS (for example: Nucleation & Growth of Ice in Space, Gas Electrode Behavior) [2] Microgravity Research like Protein or Semiconductor Crystallization [3] Energy Conversion and Storage System for Space Engineering (Unitized Regenerative FC), LIB, Nuclear Battery) [4] Sensor System for Rover Eng. & X-ray Astrophysics [5] Life Supporting System including Desalination Technology and CO2 Reduction [6] ISRU, Materials Processing/Thermodynamic Measurement with ELF [7] Computational Chemistry/Interfacial Reaction Dynamics [8] Ion Transfer through Cell Membrane in Bio-physics [9] Global Environmental Observation System [10] Others
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26

Lewandowski, Zbigniew, Wayne Dickinson i Whonchee Lee. "Electrochemical interactions of biofilms with metal surfaces". Water Science and Technology 36, nr 1 (1.07.1997): 295–302. http://dx.doi.org/10.2166/wst.1997.0067.

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Two mechanisms of microbially influenced corrosion (MIC) are discussed and compared: corrosion modified by the presence of (1) sulfate-reducing bacteria (SRB) and (2) manganese-oxidizing bacteria (MOB). It is demonstrated that the nature of MIC in both cases depends on the nature of inorganic materials precipitated at the metal surface, iron sulfides and manganese oxides. Those materials are electrochemically active and, therefore, modify the electrochemical processes naturally occurring at the metal-solution interface. Some of these modifications may lead to accelerated corrosion.
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27

Soneda, Yasushi. "Nanocarbons for electrochemical capacitor electrode materials". Carbon 175 (kwiecień 2021): 611–12. http://dx.doi.org/10.1016/j.carbon.2021.01.074.

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28

Kovalevsky, Andréy V., D. V. Sviridov, Vladislav V. Kharton, E. N. Naumovich i Jorge R. Frade. "Oxygen Evolution on Perovskite-Type Cobaltite Anodes: An Assessment of Materials Science-Related Aspects". Materials Science Forum 514-516 (maj 2006): 377–81. http://dx.doi.org/10.4028/www.scientific.net/msf.514-516.377.

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Ceramic anodes, made of perovskite-type rare-earth and strontium cobaltites substituted in both sublattices, exhibit a high electrocatalytic activity towards oxygen evolution in alkaline media. This work analyzes the relationships between cation composition, defect structure, electronic conductivity and electrochemical performance for a wide group of perovskite-like cobaltites, including Ln1-yAyCoO3-δ (Ln= Pr, Nd, Sm; A= Sr, Ca; y= 0-0.4), La1-x-ySrxBiyCoO3-δ (x= 0-0.6, y= 0-0.1), La0.7-xSr0.3CoO3-δ (x= 0-0.10), Sr1-xBaxCoO3-δ (x= 0.1-0.2) and SrCo1-yMyO3-δ (M=Fe, Ni, Ti, Cu; y= 0.1-0.6). The materials were prepared by the standard ceramic technique and characterized employing XRD, TGA, iodometric titration, and total conductivity measurements. A relatively high electrochemical performance in alkaline solutions was observed for (La,Sr)CoO3-based compositions with a moderate A-site deficiency. For SrCoO3-based materials, an increase in the oxygen evolution rate was found when co-substituting cobalt with several transition metal cations, such as Fe3+/4+ and Cu2+/3+. The results show that, in general, the key composition-related factors influencing electrochemical activity in alkaline media include the oxygen vacancy concentration, the average positive charge density in the crystal lattice, and possible blocking of active sites on the electrode surface.
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Leighton, Chris, Turan Birol i Jeff Walter. "What controls electrostatic vs electrochemical response in electrolyte-gated materials? A perspective on critical materials factors". APL Materials 10, nr 4 (1.04.2022): 040901. http://dx.doi.org/10.1063/5.0087396.

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Electrolyte-gate transistors are a powerful platform for control of material properties, spanning semiconducting behavior, insulator-metal transitions, superconductivity, magnetism, optical properties, etc. When applied to magnetic materials, for example, electrolyte-gate devices are promising for magnetoionics, wherein voltage-driven ionic motion enables low-power control of magnetic order and properties. The mechanisms of electrolyte gating with ionic liquids and gels vary from predominantly electrostatic to entirely electrochemical, however, sometimes even in single material families, for reasons that remain unclear. In this Perspective, we compare literature ionic liquid and ion gel gating data on two rather different material classes—perovskite oxides and pyrite-structure sulfides—seeking to understand which material factors dictate the electrostatic vs electrochemical gate response. From these comparisons, we argue that the ambient-temperature anion vacancy diffusion coefficient ( not the vacancy formation energy) is a critical factor controlling electrostatic vs electrochemical mechanisms in electrolyte gating of these materials. We, in fact, suggest that the diffusivity of lowest-formation-energy defects may often dictate the electrostatic vs electrochemical response in electrolyte-gated inorganic materials, thereby advancing a concrete hypothesis for further exploration in a broader range of materials.
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Medvedeva, Anna, Elena Makhonina, Lidia Pechen, Yury Politov, Aleksander Rumyantsev, Yury Koshtyal, Alexander Goloveshkin, Konstantin Maslakov i Igor Eremenko. "Effect of Al and Fe Doping on the Electrochemical Behavior of Li1.2Ni0.133Mn0.534Co0.133O2 Li-Rich Cathode Material". Materials 15, nr 22 (19.11.2022): 8225. http://dx.doi.org/10.3390/ma15228225.

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This article studies the doping of Li-rich cathode materials. Aluminum and iron were chosen as dopants. Li-rich cathode materials for lithium-ion batteries, which were composed of Li1.2Ni0.133Mn0.534Co0.133O2 with a partial replacement of cobalt (2 at %) by iron and aluminum, were synthesized. The dopants were introduced at the precursor synthesis stage by co-precipitation. The presence of Fe and Al in the composition of the synthesized samples was proved by inductively coupled plasma mass spectrometry, X-ray diffraction analysis and X-ray microanalysis. The cathode materials were tested electrochemically. The incorporation of Al and Fe into the structure of lithium-enriched materials improved the cyclability and reduced the voltage fade of the cathodes. An analysis of the electrochemical data showed that the structural changes that occur in the initial cycles are different for the doped and starting materials and affect their cycling stability. The partial cation substitution suppressed the unfavorable phase transition to lower-voltage structures and improved the electrochemical performance of the materials under study.
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31

Orqusha, Nimet, Sereilakhena Phal, Avni Berisha i Solomon Tesfalidet. "Experimental and Theoretical Study of the Covalent Grafting of Triazole Layer onto the Gold Surface". Materials 13, nr 13 (30.06.2020): 2927. http://dx.doi.org/10.3390/ma13132927.

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Finding novel strategies for surface modification is of great interest in electrochemistry and material sciences. In this study, we present a strategy for modification of a gold electrode through covalent attachment of triazole (TA) groups. Triazole groups were electrochemically grafted at the surface of the electrode by a reduction of in situ generated triazolediazonium cations. The resulting grafted surface was characterized before and after the functionalization process by different electrochemical methods (cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS)) confirming the presence of the grafted layer. The grafting of TA on the electrode surface was confirmed using analysis of surface morphology (by atomic force microscopy), the thickness of the grafted layer (by ellipsometry) and its composition (by X-ray photoelectron spectroscopy). Density functional theory (DFT) calculations imply that the grafted triazole offers a stronger platform than the grafted aryl layers.
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32

De La Fuente, María José, Leslie K. Daille, Rodrigo De la Iglesia, Magdalena Walczak, Francisco Armijo, Gonzalo E. Pizarro i Ignacio T. Vargas. "Electrochemical Bacterial Enrichment from Natural Seawater and Its Implications in Biocorrosion of Stainless-Steel Electrodes". Materials 13, nr 10 (19.05.2020): 2327. http://dx.doi.org/10.3390/ma13102327.

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Microbial electrochemical technologies have revealed the opportunity of electrochemical enrichment for specific bacterial groups that are able to catalyze reactions of interest. However, there are unsolved challenges towards their application under aggressive environmental conditions, such as in the sea. This study demonstrates the impact of surface electrochemical potential on community composition and its corrosivity. Electrochemical bacterial enrichment was successfully carried out in natural seawater without nutrient amendments. Experiments were carried out for ten days of exposure in a closed-flow system over 316L stainless steel electrodes under three different poised potentials (−150 mV, +100 mV, and +310 mV vs. Ag/AgCl). Weight loss and atomic force microscopy showed a significant difference in corrosion when +310 mV (vs. Ag/AgCl) was applied in comparison to that produced under the other tested potentials (and an unpoised control). Bacterial community analysis conducted using 16S rRNA gene profiles showed that poised potentials are more positive as +310 mV (vs. Ag/AgCl) resulted in strong enrichment for Rhodobacteraceae and Sulfitobacter. Hence, even though significant enrichment of the known electrochemically active bacteria from the Rhodobacteraceae family was accomplished, the resultant bacterial community could accelerate pitting corrosion in 316 L stainless steel, thereby compromising the durability of the electrodes and the microbial electrochemical technologies.
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33

Nandi, Santosh S., Vinayak Adimule, Santosh A. Kadapure i S. S. Kerur. "Rare Earth Based Nanocomposite Materials for Prominent Performance Supercapacitor: A Review". Applied Mechanics and Materials 908 (2.08.2022): 3–18. http://dx.doi.org/10.4028/p-rff302.

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Rare-earth-based nanocomposites are currently attracting extensive research interest in biology, medicine, physics, chemistry and material science owing to their optical, electrical and electronic properties, their stability and novel applications. Rare-earth based nanomaterials, especially rare earth oxides (Yttrium oxide, Gadolinium oxide, lanthanum oxide, cerium dioxide, etc.) have fascinated people's devotion owing to their good environmentally friendly and redox properties characteristics. Rare-earth based nanomaterials with exceptional electrochemical properties can be attained by simple, low-cost, environmentally friendly approaches such as hydrothermal/solvothermal method, electrodeposition method, atomic layer deposition method, etc. The electrochemical and microstructures properties of the samples were characterized by X-ray diffraction, scanning electron microscopy, galvanostatic charge/discharge cycling, potentiostatic electrochemical impedance spectroscopy and cyclic voltammetry, in this review, we present a wide-ranging explanation of synthesis methods, morphology and electrochemical performance of numerous rare-earth based nanomaterials used in supercapacitors. We present in this review a brief overview of the recent and general progresses in their functionalization and synthesis.
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34

Zeglio, Erica, i Olle Inganäs. "Active Materials for Organic Electrochemical Transistors". Advanced Materials 30, nr 44 (18.07.2018): 1800941. http://dx.doi.org/10.1002/adma.201800941.

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35

Gao, Jiaming, Haiwei Fu, Chen Liu, Yifan Zhu i Xiuqing Fu. "Ni-Fe Alloy Coatings Prepared via Jet Electrodeposition for the Optimization of the Electrochemical Detection Performance of Laser-Induced Graphene for Pb(II)". Metals 13, nr 7 (9.07.2023): 1253. http://dx.doi.org/10.3390/met13071253.

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Heavy metal pollution in water, particularly Pb ion pollution, has seriously threatened human life and health. Therefore, the manufacture of efficient and sensitive heavy metal ion detection materials is essential. The objective of this study was to improve the electrochemical detection performance of laser-induced graphene (LIG) for Pb(II). Considering the excellent ion affinity and high activity of transition metals, Ni-Fe alloy coatings were prepared on the surface of LIG through jet electrodeposition. The prepared LIG and Ni-Fe/LIG were qualitatively analyzed through Raman spectrometry, X-ray diffraction analysis, scanning electron microscopy, and energy-dispersive X-ray spectroscopy. The surface micromorphologies, charge transfer capabilities, and electrochemically active surface areas of LIG and Ni-Fe/LIG were characterized. The detection range and limit of detection (LOD) of Pb(II) for LIG and Ni-Fe /LIG as electrochemical sensors were analyzed. Results showed that compared with LIG, Ni-Fe/LIG had more surface active sites, a higher charge transfer capability, and a larger electrochemically active surface area that reached 0.828 cm2. Ni-Fe/LIG had a detection range of 20–1200 µg/L and an LOD of as low as 0.771 µg/L. Ni-Fe/LIG demonstrated a better electrochemical detection performance for Pb(II) than LIG when used as an electrochemical sensor.
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36

Chu, Jian. "Electrochemical sensor for sulfide determinationin food additives". Functional materials 25, nr 1 (28.03.2018): 184–87. http://dx.doi.org/10.15407/fm25.01.184.

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37

Müller, Sean, Hartmut Rudmann, Michael F. Rubner i Hannah Sevian. "Using Organic Light-Emitting Electrochemical Thin-Film Devices To Teach Materials Science". Journal of Chemical Education 81, nr 11 (listopad 2004): 1620. http://dx.doi.org/10.1021/ed081p1620.

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38

Janáky, Csaba, i Csaba Visy. "Conducting polymer-based hybrid assemblies for electrochemical sensing: a materials science perspective". Analytical and Bioanalytical Chemistry 405, nr 11 (23.01.2013): 3489–511. http://dx.doi.org/10.1007/s00216-013-6702-y.

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39

Meutzner, Falk, Tina Nestler, Juliane Hanzig, Matthias Zschornak, Mateo Ureña de Vivanco, Wolfram Münchgesang, Robert Schmid, Charaf Cherkouk, Tilmann Leisegang i Dirk Meyer. "Categorization of electrochemical storage materials en route to new concepts". Acta Crystallographica Section A Foundations and Advances 70, a1 (5.08.2014): C364. http://dx.doi.org/10.1107/s2053273314096351.

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Because of their broad range of applications, electrochemical energy storage devices are the subject of a growing field of science and technology. Their unique features of high practical energy and power densities and low prices allow mobile and stationary applications. A large variety of electrochemical systems has been tailored for specific applications: Lithium-ion batteries for example have been optimized for mobile applications ranging from mobile phones to electric vehicles. On the other hand, sodium-sulphur accumulators – among others – have been developed for stationary applications to account for the capricious nature of renewable energies. Chemistry, physics and materials science have led to the optimization of existing cell-chemistries and the development of new concepts such as all-liquid or all-solid state batteries as well as high-energy density metal-air batteries. The aim of the BMBF (Federal Ministry of Education and Research, Germany)-financed project "CryPhysConcept" is to develop new concepts for electrochemical energy storage applying a crystallographic approach. First, a categorization of the main solid components of batteries based on their underlying working principles is suggested. Second, an algorithm for the identification of suitable new materials and material combinations, based on economical, ecological and material properties as well as crystallographic parameters, is presented. Based on these results, new concepts using multi-valent metal ions are proposed. Theoretical as well as experimental results including an iron-ion approach are presented.
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40

Bitenc, Jan, Tjaša Pavčnik, Urban Košir i Klemen Pirnat. "Quinone Based Materials as Renewable High Energy Density Cathode Materials for Rechargeable Magnesium Batteries". Materials 13, nr 3 (21.01.2020): 506. http://dx.doi.org/10.3390/ma13030506.

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Organic cathode materials are promising cathode materials for multivalent batteries. Among organic cathodes, anthraquinone (AQ) has already been applied to various metal‒organic systems. In this work, we compare electrochemical performance and redox potential of AQ with 1,4-naphthoquinone (NQ) and 1,4-benzoquinone (BQ), both of which offer significantly higher theoretical energy density than AQ and are tested in two different Mg electrolytes. In Mg(TFSI)2-2MgCl2 electrolyte, NQ and BQ exhibit 0.2 and 0.5 V higher potential than AQ, respectively. Furthermore, an upshift of potential for 200 mV in MgCl2-AlCl3 electrolyte versus Mg(TFSI)2-2MgCl2 was confirmed for all used organic compounds. While lower molecular weights of NQ and BQ increase their specific capacity, they also affect the solubility in used electrolytes. Increased solubility lowers long-term capacity retention, confirming the need for the synthesis of NQ and BQ based polymers. Finally, we examine the electrochemical mechanism through ex situ attenuated total reflectance infrared spectroscopy (ATR-IR) and comparison of ex situ cathode spectra with spectra of individual electrode components. For the first time, magnesium anthracene-9,10-bis(olate), a discharged form of AQ moiety, is synthesized, which allows us to confirm the electrochemical mechanism of AQ cathode in Mg battery system.
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41

Sebastian, Amritanand, Fu Zhang, Akhil Dodda, Dan May-Rawding, He Liu, Tianyi Zhang, Mauricio Terrones i Saptarshi Das. "Electrochemical Polishing of Two-Dimensional Materials". ACS Nano 13, nr 1 (28.11.2018): 78–86. http://dx.doi.org/10.1021/acsnano.8b08216.

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42

Pikul, James H., i Jeffrey W. Long. "Architected materials for advanced electrochemical systems". MRS Bulletin 44, nr 10 (październik 2019): 789–95. http://dx.doi.org/10.1557/mrs.2019.229.

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Liu, Jun, Ji-Guang Zhang, Zhenguo Yang, John P. Lemmon, Carl Imhoff, Gordon L. Graff, Liyu Li i in. "Materials Science and Materials Chemistry for Large Scale Electrochemical Energy Storage: From Transportation to Electrical Grid". Advanced Functional Materials 23, nr 8 (4.06.2012): 929–46. http://dx.doi.org/10.1002/adfm.201200690.

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44

Julien, C. "Electrochemical properties of disordered cathode materials". Ionics 2, nr 3-4 (maj 1996): 169–78. http://dx.doi.org/10.1007/bf02376017.

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45

Kang, In Pil, Joo Yung Jung, Gyeong Rak Choi, Hyung Ki Park, Jong Won Lee, Kwang Joon Yoon, Yeo Heung Yun, Vesselin N. Shanov i Mark J. Schulz. "Developing Carbon Nanocomposite Smart Materials". Solid State Phenomena 119 (styczeń 2007): 207–10. http://dx.doi.org/10.4028/www.scientific.net/ssp.119.207.

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To address the need for new smart materials, this paper explores the use of carbon nanotubes to develop a nanocomposite smart material having electrochemical impedance properties for sensing and actuation. Fabrication and characterization of the carbon nanocomposite material are discussed in the paper. The issues related to hurdles in the practical manufacturing of commodity level macro size nanocomposite smart materials with prescribed electrical and electrochemical properties are also discussed.
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46

Yu, Zhiyong, Jishen Hao, Wenji Li i Hanxing Liu. "Enhanced Electrochemical Performances of Cobalt-Doped Li2MoO3 Cathode Materials". Materials 12, nr 6 (13.03.2019): 843. http://dx.doi.org/10.3390/ma12060843.

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Co-doped Li2MoO3 was successfully synthesized via a solid phase method. The impacts of Co-doping on Li2MoO3 have been analyzed by X-ray photoelectron spectroscopy (XPS), X-ray powder diffraction (XRD), scanning electron microscope (SEM), and Fourier transform infrared spectroscopy (FTIR) measurements. The results show that an appropriate amount of Co ions can be introduced into the Li2MoO3 lattices, and they can reduce the particle sizes of the cathode materials. Electrochemical tests reveal that Co-doping can significantly improve the electrochemical performances of the Li2MoO3 materials. Li2Mo0.90Co0.10O3 presents a first-discharge capacity of 220 mAh·g−1, with a capacity retention of 63.6% after 50 cycles at 5 mA·g−1, which is much better than the pristine samples (181 mAh·g−1, 47.5%). The enhanced electrochemical performances could be due to the enhancement of the structural stability, and the reduction in impedance, due to the Co-doping.
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47

Vasylyev, O. D. "Materials science for fuel cells". Uspihi materialoznavstva 2021, nr 3 (1.12.2021): 4–12. http://dx.doi.org/10.15407/materials2021.03.004.

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The words on fuel cells, especially joined with hydrogen, take more and more rooms in discussions on security, energy and ecology. The paper addresses questions concerning the structural optimization of electrolytes and electrodes applying both zirconia and proton exchange membrane. The final, optimized, chemical composition and structure of entire fuel cells would be tuned by considering the structural altering occurring during both production and long-term operation. The paper evidences undeniably that the structure of fuel cells, ceramic and polymeric ones, direct and reversible, require a deep detailed comparative study in states after both production and different time of operation. Respectively, a structural optimization of fuel cells to be related to all the complex of their properties that finally has to result in an improvement both properties themselves and their stabilization for a long term of usage is required. It is clear that up-to-date fuel cells cannot be considered more as some just chemical devices producing electricity. They have to be sointricately designed that each their atom is attached to each of its neighbors in such an optimal way in order to ensure the properties of whole the fuel cell as adevice, which produces useful energy in the best possible manner during rather long period of time. It means that from materials science point of view the structure of fuel cell must be optimized to meet a wide spectrum of requirements to cell as high temperature electrochemical device of a long-term of operation. Now, materials science concerning fuel cells is a study not only such the obvious topics as ionic or electronic conductivities, structure of dense electrolyte and both three phase porous electrodes, mechanical behavior of entire fuel cell device etc. The study of an influence of loading and gases delivery to their interaction sites on properties of entire energy system is obvious also. In general, the fuel cell technologies are rather mature already and they might be put into commercial production. Nevertheless, the opportunities for development are endless. 3D printing is imminent. Keywords: fuel cell; ceramic fuel cell; fuel cell based on proton exchange membrane; fuel cell electrolyte; fuel cell electrode; structural optimization; materials science for fuel cells.
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Avram, Diana Nicoleta, Corneliu Mircea Davidescu, Iosif Hulka, Mircea Laurentiu Dan, Elena Manuela Stanciu, Alexandru Pascu i Julia Claudia Mirza-Rosca. "Corrosion Behavior of Coated Low Carbon Steel in a Simulated PEMFC Environment". Materials 16, nr 8 (12.04.2023): 3056. http://dx.doi.org/10.3390/ma16083056.

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Here, potential metallic bipolar plate (BP) materials were manufactured by laser coating NiCr-based alloys with different Ti additions on low carbon steel substrates. The titanium content within the coating varied between 1.5 and 12.5 wt%. Our present study focussed on electrochemically testing the laser cladded samples in a milder solution. The electrolyte used for all of the electrochemical tests consisted of a 0.1 M Na2SO4 solution (acidulated with H2SO4 at pH = 5) with the addition of 0.1 ppm F−. The corrosion resistance properties of the laser-cladded samples was evaluated using an electrochemical protocol, which consisted of the open circuit potential (OCP), electrochemical impedance spectroscopy (EIS) measurements, and potentiodynamic polarization, followed by potentiostatic polarization under simulated proton exchange membrane fuel cell (PEMFC) anodic and cathodic environments for 6 h each. After the samples were subjected to potentiostatic polarization, the EIS measurements and potentiodynamic polarization were repeated. The microstructure and chemical composition of the laser cladded samples were investigated by scanning electron microscopy (SEM) combined with energy-dispersive X-ray spectroscopy (EDX) analysis.
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Tamiya, Eiichi. "Nano-materials for LSPR and electrochemical biosensors". Nanomedicine: Nanotechnology, Biology and Medicine 12, nr 2 (luty 2016): 450. http://dx.doi.org/10.1016/j.nano.2015.12.006.

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Hoeppener, S., R. Maoz i J. Sagiv. "Contact Electrochemical Replication of Electrochemically Printed Monolayer Patterns". Advanced Materials 18, nr 10 (15.05.2006): 1286–90. http://dx.doi.org/10.1002/adma.200502421.

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