Relevant bibliographies by topics / Nickel cobaltite

Academic literature on the topic 'Nickel cobaltite'

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Published: 30 May 2022
Last updated: 31 May 2022

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Journal articles on the topic "Nickel cobaltite"

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Deng, Kaimo, and Liang Li. "Ternary nickel cobaltite nanostructures for energy conversion." Functional Materials Letters 08, no. 04 (August 2015): 1530002. http://dx.doi.org/10.1142/s1793604715300029.

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Ternary nickel cobaltite nanostructures have found their application in many optoelectronic devices due to their excellent electronic and catalytic properties. In this review paper, we will discuss two synthetic strategies for ternary nickel cobaltite nanostructures: nickel cobaltite nanopowders and conductive substrate supported nickel cobaltite, respectively. Then selected examples utilizing ternary nickel cobaltite nanostructures as building blocks for solar cells, photodetectors and water oxidation will be highlighted. In the end, an outlook and conclusion will be given about the future research and development in this field.
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Loche, Danilo, Claudia Marras, Daniela Carta, Maria Francesca Casula, Gavin Mountjoy, and Anna Corrias. "Cation distribution and vacancies in nickel cobaltite." Physical Chemistry Chemical Physics 19, no. 25 (2017): 16775–84. http://dx.doi.org/10.1039/c7cp02260c.

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Abdelwahab, Abdalla, Francisco Carrasco-Marín, and Agustín F. Pérez-Cadenas. "Carbon Xerogels Hydrothermally Doped with Bimetal Oxides for Oxygen Reduction Reaction." Materials 12, no. 15 (July 31, 2019): 2446. http://dx.doi.org/10.3390/ma12152446.

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A total of two carbon xerogels doped with cobalt and nickel were prepared by the sol–gel method. The obtained carbon xerogels underwent further surface modification with three binary metal oxides namely: nickel cobaltite, nickel ferrite, and cobalt ferrite through the hydrothermal method. The mesopore volumes of these materials ranged between 0.24 and 0.40 cm3/g. Moreover, there was a morphology transformation for the carbon xerogels doped with nickel cobaltite, which is in the form of nano-needles after the hydrothermal process. Whereas the carbon xerogels doped with nickel ferrite and cobalt ferrite maintained the normal carbon xerogel structure after the hydrothermal process. The prepared materials were tested as electrocatalysts for oxygen reduction reaction using 0.1 M KOH. Among the prepared carbon xerogels cobalt-doped carbon xerogel had better electrocatalytic performance than the nickel-doped ones. Moreover, the carbon xerogels doped with nickel cobaltite showed excellent activity for oxygen reduction reaction due to mesoporosity development. NiCo2O4/Co-CX showed to be the best electrocatalyst of all the prepared electrocatalysts for oxygen reduction reaction application, exhibiting the highest electrocatalytic activity, lowest onset potential Eonset of −0.06 V, and the lowest equivalent series resistance (ESR) of 2.74 Ω.
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Xu, Yazhou, Junchao Wei, Licheng Tan, Ji Yu, and Yiwang Chen. "A Facile approach to NiCoO2 intimately standing on nitrogen doped graphene sheets by one-step hydrothermal synthesis for supercapacitors." Journal of Materials Chemistry A 3, no. 13 (2015): 7121–31. http://dx.doi.org/10.1039/c5ta00298b.

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Oh, Kyu Hyun, Girish Sambhaji Gund, and Ho Seok Park. "Stabilizing NiCo2O4 hybrid architectures by reduced graphene oxide interlayers for improved cycling stability of hybrid supercapacitors." Journal of Materials Chemistry A 6, no. 44 (2018): 22106–14. http://dx.doi.org/10.1039/c8ta04038a.

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Nickel cobaltite@reduced graphene oxide (NiCo2O4@rGO) hybrid architectures directly deposited on nickel-foam (NF) are synthesized, showing kinetic and structural stability achieved by the rGO interlayers for improved energy density and cyclic stability of the hybrid supercapacitors.
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Bhaway, Sarang M., Pattarasai Tangvijitsakul, Jeongwoo Lee, Mark D. Soucek, and Bryan D. Vogt. "High rate sodium ion battery anodes from block copolymer templated mesoporous nickel–cobalt carbonates and oxides." Journal of Materials Chemistry A 3, no. 42 (2015): 21060–69. http://dx.doi.org/10.1039/c5ta04520g.

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Deshagani, Sathish, Xinhua Liu, Billy Wu, and Melepurath Deepa. "Nickel cobaltite@poly(3,4-ethylenedioxypyrrole) and carbon nanofiber interlayer based flexible supercapacitors." Nanoscale 11, no. 6 (2019): 2742–56. http://dx.doi.org/10.1039/c8nr08645a.

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Yedluri, Anil Kumar, and Hee-Je Kim. "Correction: Enhanced electrochemical performance of nanoplate nickel cobaltite (NiCo2O4) supercapacitor applications." RSC Advances 10, no. 3 (2020): 1296. http://dx.doi.org/10.1039/c9ra90096a.

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Correction for ‘Enhanced electrochemical performance of nanoplate nickel cobaltite (NiCo2O4) supercapacitor applications’ by Anil Kumar Yedluri et al., RSC Adv., 2019, 9, 1115–1122.
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Garg, Neha, Mrinmoyee Basu, and Ashok Kumar Ganguli. "Nickel Cobaltite Nanostructures with Enhanced Supercapacitance Activity." Journal of Physical Chemistry C 118, no. 31 (July 17, 2014): 17332–41. http://dx.doi.org/10.1021/jp5039738.

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Pang, M. J., S. Jiang, G. H. Long, Y. Ji, W. Han, B. Wang, X. L. Liu, Y. L. Xi, F. Z. Xu, and G. D. Wei. "Mesoporous NiCo2O4 nanospheres with a high specific surface area as electrode materials for high-performance supercapacitors." RSC Advances 6, no. 72 (2016): 67839–48. http://dx.doi.org/10.1039/c6ra14099h.

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Ternary nickel cobaltite has attracted more and more attention as a promising electrode material for high performance supercapacitors (SCs) due to its high theoretical capacity, unique crystal structure and excellent electronic conductivity.
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Dissertations / Theses on the topic "Nickel cobaltite"

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Воронова, Анастасія Сергіївна. "Синтез та каталітичні властивості мезопоруватих нікель-кобальтових шпінелей та їх композитів." Master's thesis, КПІ ім. Ігоря Сікорського, 2019. https://ela.kpi.ua/handle/123456789/29007.

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У контексті сучасного пошуку та досліджень альтернативних джерел енергії електрохімічні системи зберігання та перетворення енергії займають значну нішу. Відкритим для дослідження питанням, пов'язаним з електрохімічними джерелами енергії, є розробка та пошук ефективних, екологічно чистих та економічно ефективних каталізаторів для паливних елементів. Перспективним напрямком у цій сфері є дослідження змішаних оксидних каталізаторів, зокрема каталізаторів зі структурою шпінелі. Сполукою, що привертає значну увагу у цій області є Ni-, Co-шпінель складу NiCo2O4 та її різноманітні композитні матеріали із поруватими носіями з розвиненою поверхнею. Об’єкт дослідження – нікель-кобальтові шпінелі та їх композити з багатошаровими вуглецевими нанотрубками та активованим вугіллям. Предмет дослідження – синтез, фізико-хімічні властивості нікель-кобальтових шпінелей та їх композитів з багатошаровими вуглецевими нанотрубками та активованим вугіллям. Метод дослідження – експериментальний. У ході роботи досліджено структурні характеристики, морфологію поверхні та фазовий склад зразків за допомогою методів низькотемпературної адсорбції-десорбції азоту, скануючої електронної мікроскопії, інфрачервоної спектроскопії та рентгеноструктурного аналізу. Каталітичну активність синтезованих зразків досліджено в модельних рідинно-фазних гетерогенно-каталітичних реакціях гідролізу борогідриду натрію та розкладання пероксиду водню. Іоннообмінні характеристики поверхні синтезованих зразків досліджено методом pH-потенціометричного титрування. У якості методу синтезу запропоновано простий на технологічний метод співосадження. Синтезовано чисті нікель-кобальтові шпінелі, а також та їх композити з багатошаровими вуглецевими нанотрубками та активованим вугіллям. Як показали отримані дані, синтезовані зразки володіють усіма властивостями ефективного каталізатора, який може бути використаний в електрохімічних джерелах енергії. Синтезовані композитні матеріали можна застосовувати у різноманітних електрохімічних пристроях зберігання та перетворення енергії, в тому числі у борогідридних паливних комірках прямої дії.
In the context of modern search and investigation of alternative energy sources, electrochemical energy storage and convertion systems occupy a significant niche. Open for research issue, related to electrochemical energy sources, is the development and search of efficient, environmentally friendly and cost-effective catalysts for fuel cells. A promising direction in this area is the study of mixed oxide catalysts, namely catalysts with a spinel structure. The compound that attracts considerable attention in this area is the Ni-, Co-spinel of the NiCo2O4 composition and its various composite materials with the developed surface carrier. The object of the study is Ni-, Co-spinels and their composites with multiwalled carbon nanotubes and activated carbon. The subject of the study is the synthesis, physical and chemical properties of Ni-, Co-spinels and their composites with multiwalled carbon nanotubes and activated carbon. The research method is experimental. During the work, the structural characteristics and surface morphology of the samples were investigated using methods of low-temperature N2 adsorption-desorption, scanning electron microscopy and X-ray diffration. The catalytic activity of the synthesized samples was investigated in the course of a model liquid-phase heterogeneous-catalytic reaction of sodium borohydride hydrolysis and decomposition of hydrogen peroxide. The ion exchange characteristics of the synthesized samples surface were investigated during pH-tertiometric titration. A simple and technological method of co-precipitation was proposed as a synthesis method. Pure nickel cobaltite and its composites with active carbon and carbon nanotubes were synthesized. As the obtained data showed, the synthesized samples possess all the properties of an effective catalyst that can be used in electrochemical energy sources. The synthesized composite materials can be used in a variety of electrochemical storage and energy conversion devices, including direct borohydride fuel cells.
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NKENG, PAUL, and Pierre Chartier. "Preparation et caracterisation de cobaltites de cobalt et de nickel. Etude des proprietes electrocatalytiques." Université Louis Pasteur (Strasbourg) (1971-2008), 1993. http://www.theses.fr/1993STR13134.

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Nous avons prepare des cobaltites de cobalt et de nickel sous forme de films par deux techniques: 1) la nebulisation reactive qui consiste a envoyer un brouillard de solution de nitrate(s) sur un support chauffe a une temperature suffisante pour obtenir leur decomposition et la formation de la phase recherchee. Nous avons montre que l'ajout de nitrates alcalins dans la solution de nebulisation augmente la rugosite des films, par exemple, d'un facteur 10 apres ajout de kno#3 ou csno#3; 2) la pulverisation cathodique qui consiste a provoquer l'ejection des atomes d'une cible, constituee d'un bloc solide de cobaltite, en bombardant celle-ci avec des ions ou atomes. Nous avons caracterise les produits obtenus par diffraction des rayons-x, les spectroscopies uv-vis-nir et ir par reflexion et ir par transmission. Le spectre optique de co#3o#4 se caracterise par un massif entre 1200 et 1500 nm tandis que celui de nico#2o#4 presente une absorption continue. La spectroscopie irft favorise l'activation des modes optiques transversaux et longitudinaux de co#3o#4 et nico#2o#4. Nous avons realise l'etude electrocatalytique en milieu basique de ces composes. On obtient des voltamogrammes dont les pics anodiques et cathodiques sont bien definis. Le couple redox implique semble reversible pour co#3o#4, ce qui n'est pas le cas pour nico#2o#4. Les pentes de tafel obtenues sont comprises entre 45 et 65 mv. Dec##1 apres correction de chute ohmique
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Altahan, Mohammed Abdulredha. "Cobalt(III), copper(II), and nickel(II) coordination compounds as cations in polyborate chemistry." Thesis, Bangor University, 2017. https://research.bangor.ac.uk/portal/en/theses/cobaltiii-copperii-and-nickelii-coordination-comppounds-as-cations-in-polyborate-chemistry(ba5f189b-2229-481f-9d8d-0bdce17903a8).html.

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This thesis describes the synthesis and characterization of a number of polyborate compounds containing transition metal complex cations; most of these compounds contain 6-membered B3O3 boroxole rings within their structures. A total of twenty-six transition metal complex polyborate salts are reported: one contains the triborate monoanion, [B3O3(OH)4]-, three contain the tetraborate dianion [B4O5(OH)4]2-, twelve contain the pentaborate anion, [B5O6(OH)4]-, three contain the hexaborate dianion, [B6O7(OH)6]2- and five contain heptaborate anions (three of which are [B7O9(OH)5]2-, and two are [B7O9(OH)6]3-). Additionally, two compounds contain two isolated polyborate anion species (octaborate dianion [B8O10(OH)6]2- with pentaborate anion [B5O6(OH)4]-, and triborate anion [B3O3(OH)4]- with [B5O6(OH)4]-). The crystal structures of fifteen salts containing these polyborate anions are reported: [Co(en)3][B5O6(OH)4][B8O10(OH)6]∙5H2O (6), [Co(NH3)6]2[B4O5(OH)4]3∙11H2O (9), s-fac-[Co(dien)2][B7O9(OH)6]∙9H2O (11), [Co(diNOsar)]2[B3O3(OH)4]Cl5∙4.75H2O (12), [Cu(en)2][B5O6(OH)4]2∙2H2O (20), [Cu(pn)2{B5O6(OH)4}][B5O6(OH)4]∙4H2O (22), [Cu(TMEDA){B6O7(OH)6}]∙6H2O (23), [Cu(dac)2(H2O)2][Cu(dac)2][B7O9(OH)5]2∙4H2O (24), [Cu(N,N-dmen)2(H2O)][B5O6(OH)4]2·3H2O (27), [Cu(N,N-dmen){B6O7(OH)6}]·4H2O (28), [Ni(en){B6O7(OH)6}(H2O)2]∙H2O (37), [Ni(AEN)][B5O6(OH)4]∙H2O (38), [Ni(dac)2(H2O-)2][Ni(dac)2][B7O9(OH)5]2∙4H2O (39), [Ni(hn)2][B5O6(OH)4]2 (40), and s-fac-[Ni(dien)2][B5O6(OH)4]2 (41). All the synthesized compounds reported were characterized using spectroscopic (IR, multi-element NMR) and analytical (melting point, elemental analysis, magnetic susceptibility, thermal analysis, powder X-ray diffraction) techniques. The solid-state structures of transition metal complex polyborate salts all display multiple cation-anion H-bond interactions and these undoubtedly play a major role in the energetics of engineering these structures. For example, in compound [Co(NH3)6]2[B4O5(OH)4]3∙11H2O (9), fourteen of the 18 amino hydrogen atoms of the [Co(NH3)6]3+ cation are involved in secondary coordination to anions via H-bonds. Two unique polyborate anions, [B8O10(OH)6)]2- and [B7O9(OH)6]3- have been prepared and characterized in [Co(en)3][B5O6(OH)4][B8O10(OH)6]∙5H2O (6) and s-fac-[Co(dien)2][B7O9(OH)6]∙9H2O (11), respectively. vii The reaction of transition metal complex cations with boric acid in different ratios produced polyborate compounds with different polyborate anions e.g. reaction of [Cu(en)2]2+ with boric acid in 1:10 and 1:5 ratios produce polyborate compounds with pentaborate(1-) and tetraborate(2-) anions, respectively. New polyborate anion structural architectures are identified in this thesis: (i) the pentaborate(1-) anion in [Cu(pn)2{B5O6(OH)4}][B5O6(OH)4]∙4H2O (22) acts as a monodentate ligand coordinated to the Cu(II) cation, (ii) the hexaborate(2-) anion in [Cu(TMEDA){B6O7(OH)6}]∙6H2O (23) and [Cu(N,N-dmen){B6O7(OH)6}]·4H2O (28) coordinates as a tridentate ligand with the Cu(II) cations, and (iii) the hexaborate(2-) anion in [Ni(en){B6O7(OH)6}(H2O)2]∙H2O (37) coordinates as a bidentate ligand with the Ni(II) cation. This is the first time that such coordination mode (i) and (iii) have been observed.
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Lee, Chia-Hong, and 李佳鴻. "Three-dimensional Porous Graphene / Nickel Cobaltite Nanocomposites Electrodes and Their Applications in Supercapacitors." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/sw6jr8.

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Lin, Wei-Hsiang, and 林瑋翔. "Microwave-assisted hydrothermal synthesis of spinel nickel cobaltite and application to the degradation of 2-chlorophenol." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/59806058192918863111.

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碩士
國立高雄師範大學
化學系
100
Catalytic degradation is one of the key remediation options that can be exploited to solve environmental pollution problems caused by chlorophenols. A novel microwave-assisted hydrothermal route for preparation of NiCo2O4 nanorods had been developed. The process contained two steps: first, nanorods of bimetallic (Ni, Co) hydroxide carbonate were obtained from a mixed solution of Ni(NO3)2．6H2O, Co(NO3)2．6H2O and urea under 800 W microwave irradiated for 5 min. Then, the bimetallic hydroxide carbonate nanorods were calcined 400℃ to fabricate spinel nickel cobaltite (NiCo2O4) nanorods. Both nanorods were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), thermogravimetry (TG), infrared (IR), BET surface areas (BET) and cyclic Voltammetry (CV). The results showed the morphologies, specific surface areas and specific capacitances changed with calcination temperatures. The catalytic activity towards the degradation of chlorophenols over NiCo2O4 nanorods was further studied under continuous bubbling of air through the liquid phase. Meanwhile the effects of initial concentration of chlorophenols, pH values, temperature, dose of catalysts and calcinated catalysts were evaluated. The results showed that 2-chlorophenol was degraded into harmless products (CO2 and water) under microwave irradiation. 95% of 2-chlorophenol was transformed in 23.6 minutes.
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Chen, Wei-Ann, and 陳韋安. "Preparation of nickel cobaltite supported on expanded mesocarbon microbeads or graphene sheets as electrode materials for supercapacitors." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/ut85s3.

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碩士
國立高雄應用科技大學
化學工程與材料工程系博碩士班
105
The study is divided into two parts: the first part is the preparation of expanded mesocarbon microbeads (eMCMBs) by chemical oxidation of MCMB graphite powder. The eMCMBs were attached to the skeleton of nickel foam through electrophoretic deposition. After heat treatment in reducing atmosphere, the eMCMBs were converted into reduced eMCMBs (reMCMBs). The nickel foam with attached reMCMBs could be used as a highly conductive skeleton to support nickel cobaltite nanoflakes. The reMCMBs were fluffy spherical structure which could accommodate electrolyte solution, afforded current collector, and function as a stress buffer to alleviate electrode damage. Microwave synthesis of thin nickel cobaltite film with mesoporous could provide large amounts of pores for penetration of electrolyte solution, a huge interfacial area for facile redox reactions, and short transport distance for ions and electrons. Nickel cobaltite grown around nickel foam with attached reMCMBs could deliver a high specific capacitance of 260 mF cm-2 at 1.25 mA cm-2, greater than that grown around nickel foam (140 mF cm-2) and good capacitance retention (about 94％ after 2000 cycles). The second part is to deposit graphene oxide on nickel foam as skeleton to support active materials. The nickel cobaltite composite electrode was prepared by hydrothermal synthesis, followed by heat treatment in reducing atmosphere. The GO was converted into reduced GO (rGO). The interlayer distance of rGO was increased after treatment. The nickel cobaltite grown on rGO could increase the contact area between electrode and electrolyte. Nickel cobaltite grown around nickel foam with attached rGO could deliver a high specific capacitance of 680 mF cm-2 at 5 mA cm-2 and capacitance retention of about 70% after 1000 galvanostatic charge-discharge cycles.
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Chien, Hsing-Ghi, and 簡馨綺. "Nickel Cobaltite and Its Composite Materials Prepared with Sol-Gel Methods for Applications in Oxygen Evolution Reaction and Energy Storage Systems." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/82924936527300553174.

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Book chapters on the topic "Nickel cobaltite"

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Nicheva, D., V. Boev, P. Petkov, G. Avdeev, and T. Petkova. "Characterization of Nickel-Cobaltite Spinel Prepared by Different Methods." In NATO Science for Peace and Security Series B: Physics and Biophysics, 79–86. Dordrecht: Springer Netherlands, 2018. http://dx.doi.org/10.1007/978-94-024-1298-7_10.

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Srivastava, Neha, Divyanshu Kumar, Rishabh Rathour, Manish Srivastava, Akshay K. Shrivastav, Maneesh Mishra, Karan Pandey, and P. K. Mishra. "Microbial synthesis of nickel–cobaltite nanoparticle for biofuel applications." In Recent Developments in Bioenergy Research, 349–62. Elsevier, 2020. http://dx.doi.org/10.1016/b978-0-12-819597-0.00018-0.

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Guene, Makhtar. "Preparation, Physical and Electrochemical Characterization of Nickel Cobaltites, NixCo3-xO4 (0 < x < 2.5): A Recent Study." In Current Advances in Chemistry and Biochemistry Vol. 6, 101–13. Book Publisher International (a part of SCIENCEDOMAIN International), 2021. http://dx.doi.org/10.9734/bpi/cacb/v6/8218d.

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Conference papers on the topic "Nickel cobaltite"

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Foo, C. Y., and N. M. Huang. "One-pot Hydrothermal Synthesis of Nickel Cobaltite for High-Performance Supercapacitor Applications." In 2018 International Conference on Solid State Devices and Materials. The Japan Society of Applied Physics, 2018. http://dx.doi.org/10.7567/ssdm.2018.ps-11-09.

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Naveen, A. Nirmalesh, and S. Selladurai. "Rapid synthesis of monodispersed highly porous spinel nickel cobaltite (NiCo2O4) electrode material for supercapacitors." In NANOFORUM 2014. AIP Publishing LLC, 2015. http://dx.doi.org/10.1063/1.4917908.

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Voronova, Anastasiia, and Irina Ivanenko. "Synthesis Methods and Modern Direction in Modification of Nickel Cobaltite and Composite Nanoparticles with its Participation." In 2018 IEEE 8th International Conference Nanomaterials: Application & Properties (NAP). IEEE, 2018. http://dx.doi.org/10.1109/nap.2018.8915243.

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Lassman, Alexander, Alevtina Smirnova, and Nigel Sammes. "An Investigation of Doped Perovskites Based on La, Pr, and Sm Ferrites as Cathode Materials for Solid Oxide Fuel Cells." In ASME 2008 6th International Conference on Fuel Cell Science, Engineering and Technology. ASMEDC, 2008. http://dx.doi.org/10.1115/fuelcell2008-65153.

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Perovskites with the composition ABO3 have been studied as cathode candidate materials for solid oxide fuel cells. Both the A and B sites can be doped. This paper investigates ABO3 perovskites in which the A site ion is lanthanum (La), praseodymium (Pr), or samarium (Sm), doped with strontium (Sr). The B site ion is iron (Fe) doped with cobalt (Co) or nickel (Ni). Powders were prepared by the glycine-nitrate process, and were calcined at temperatures between 700°C and 900°C. XRD analysis was performed to determine the effect of calcination temperature on structure. Cathode pellets were made and sintered at 1200°C for 4 hours. The electrical conductivity of these pellets was measured, in ambient air, at temperatures ranging from 200°C to 800°C. The measured conductivity was generally higher for the ferrite-nickelates than the ferrite-cobaltites. Additionally, the samples with lanthanum as the A site cation demonstrated higher electrical conductivity than those with samarium or praseodymium.
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