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Artigos de revistas sobre o tema "Photo-electrochemical cells"

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Autor: Grafiati

Publicado: 20 de julho de 2024

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1

Djellal, L., A. Bouguelia, M. Kadi Hanifi e M. Trari. "Bulk p-CuInSe2 photo-electrochemical solar cells". Solar Energy Materials and Solar Cells 92, n.º 5 (maio de 2008): 594–600. http://dx.doi.org/10.1016/j.solmat.2007.08.007.

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2

Singh, R. P., e S. L. Singh. "Electrodeposited semiconducting CuInSe2films. II. Photo-electrochemical solar cells". Journal of Physics D: Applied Physics 19, n.º 9 (14 de setembro de 1986): 1759–69. http://dx.doi.org/10.1088/0022-3727/19/9/020.

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3

., Bachu Naveen Kumar. "ZNO AND ZNO/PBS HETEROJUNCTION PHOTO ELECTROCHEMICAL CELLS". International Journal of Research in Engineering and Technology 04, n.º 07 (25 de julho de 2015): 464–67. http://dx.doi.org/10.15623/ijret.2015.0407074.

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4

Tenholt, Carmen, Daniel Höche, Mauricio Schieda e Thomas Klassen. "Design of a reference model for fast optimization of photo-electrochemical cells". Sustainable Energy & Fuels 6, n.º 6 (2022): 1489–98. http://dx.doi.org/10.1039/d1se01671g.

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5

Beaver, Kevin, e Shelley D. Minteer. "Probing Carboxylate Anolytes for Photo-Biofuel Cells through Combination of Bioinformatics and Electrochemistry". ECS Meeting Abstracts MA2022-01, n.º 43 (7 de julho de 2022): 1851. http://dx.doi.org/10.1149/ma2022-01431851mtgabs.

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Photoheterotrophic purple bacterium Rhodobacter capsulatus has recently gained attention for its high halotolerance and its photo-enhanced extracellular electron transfer via exogenous quinone redox mediators, opening opportunity for self-powered decontamination of saline wastewater. Biodegradation of malate and succinate in R. capsulatus electrochemical systems has undergone prior examination, although a consistent bioelectrochemical system to comparatively study multiple carbon sources has not previously been developed. In this study, electrochemical techniques, biological assays, and computational tools were combined to evaluate malate, succinate, propionate, and lactate as oxidizable fuels in photo-enhanced microbial electrochemical systems. Specifically, cyclic voltammetry and amperometry data demonstrated that R. capsulatus generates distinctive photo-enhanced current densities dependent on both fuel identity and concentration. Bacterial growth curve studies were in agreement with the electrochemical data, indicating that lactate, which yielded the greatest bio-anodic current density (9.5 ± 1.9 µA cm-2), allowed the bacteria to grow more rapidly than the other substrates, suggesting its effectiveness as a fuel. Moreover, propionate appeared to be the fuel least efficiently utilized by R. capsulatus, having the slowest growth curve and the lowest current density generation (1.3 ± 0.2 µA cm-2). Finally, high-throughput differential gene expression analysis allowed for illuminating the physiological underpinnings of the observed differences between substrates. Most remarkably, cells grown in lactate were found to overexpress light harvesting complex II proteins and to underexpress flagellar motility proteins, which both correspond to the high photo-enhanced current density in lactate bioanodes compared to malate and propionate.

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6

Bhadra, C. U., D. Henry Raja e D. Jonas Davidson. "Electrochemical Anodization and Characterization of Titanium Oxide Nanotubes for Photo Electrochemical Cells". Journal of Physics: Conference Series 2070, n.º 1 (1 de novembro de 2021): 012073. http://dx.doi.org/10.1088/1742-6596/2070/1/012073.

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Abstract Due to its multitude of applications, titanium oxide is one of the most coveted and most sought-after materials. The above experiment demonstrated that TiO2 nanotube arrays might be formed by electrochemical anodization of titanium foil. The 0.25 wt% ammonium fluoride (NH4F) was added to a solution of 99% ethylene glycol. Anodization is carried out at a constant DC voltage of 12V for 1 hour. Then, the annealing process is carried out for 1 hour at 4800C, which is known as an annealing. FE-SEM were utilized to evaluate the surface morphology of the nanotube arrays that were made. At the wavelength of 405 nm, sharply peaked photoluminescence intensity was observed, which corresponded tothe band gap energy (3.2 eV) of the anatase TiO2 phase. Since free excitations appear at 391 and 496 nm, and since oxygen vacancies are developed on the surface of titania nanotube arrays, it is reasonable to conclude that free excitations and oxygen vacancies are the causes of humps at 391 and 496 nm, and that they may also be present at 412 and 450 nm. FESEM results showed uniformly aligned TiO2 nanotube arrays with an inner diameter of 100 nm and a wall thickness of 50 nm

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7

Agarwal, M. K., e G. H. Yousefi. "Photo-electrochemical solar cells using mixed transition metal dichalcogenide single crystal photo-electrodes". Crystal Research and Technology 24, n.º 10 (outubro de 1989): K179—K182. http://dx.doi.org/10.1002/crat.2170241021.

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8

Liu, Yuqing, Shuai Zhang, Stephen Beirne, Kyuman Kim, Chunyan Qin, Yumeng Du, Yuetong Zhou, Zhenxiang Cheng, Gordon Wallace e Jun Chen. "Wearable Photo‐Thermo‐Electrochemical Cells (PTECs) Harvesting Solar Energy". Macromolecular Rapid Communications 43, n.º 6 (3 de fevereiro de 2022): 2200001. http://dx.doi.org/10.1002/marc.202200001.

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9

Lu, Lu, Waltteri Vakki, Jeffery A. Aguiar, Chuanxiao Xiao, Katherine Hurst, Michael Fairchild, Xi Chen, Fan Yang, Jing Gu e Zhiyong Jason Ren. "Unbiased solar H2 production with current density up to 23 mA cm−2 by Swiss-cheese black Si coupled with wastewater bioanode". Energy & Environmental Science 12, n.º 3 (2019): 1088–99. http://dx.doi.org/10.1039/c8ee03673j.

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10

Soldatov, Mikhail A., Pavel V. Medvedev, Victor Roldugin, Ivan N. Novomlinskiy, Ilia Pankin, Hui Su, Qinghua Liu e Alexander V. Soldatov. "Operando Photo-Electrochemical Catalysts Synchrotron Studies". Nanomaterials 12, n.º 5 (2 de março de 2022): 839. http://dx.doi.org/10.3390/nano12050839.

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The attempts to develop efficient methods of solar energy conversion into chemical fuel are ongoing amid climate changes associated with global warming. Photo-electrocatalytic (PEC) water splitting and CO2 reduction reactions show high potential to tackle this challenge. However, the development of economically feasible solutions of PEC solar energy conversion requires novel efficient and stable earth-abundant nanostructured materials. The latter are hardly available without detailed understanding of the local atomic and electronic structure dynamics and mechanisms of the processes occurring during chemical reactions on the catalyst–electrolyte interface. This review considers recent efforts to study photo-electrocatalytic reactions using in situ and operando synchrotron spectroscopies. Particular attention is paid to the operando reaction mechanisms, which were established using X-ray Absorption (XAS) and X-ray Photoelectron (XPS) Spectroscopies. Operando cells that are needed to perform such experiments on synchrotron are covered. Classical and modern theoretical approaches to extract structural information from X-ray Absorption Near-Edge Structure (XANES) spectra are discussed.

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11

Yu, Feng Qin, Min Dong e Ya Li Yi. "Photo Electrochemical Responses of Titanium Oxide Nanotube Arrays on Pure Titanium Substrate". Advanced Materials Research 588-589 (novembro de 2012): 43–46. http://dx.doi.org/10.4028/www.scientific.net/amr.588-589.43.

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This paper deals with photo electrochemical responses of titanium dioxide nanotubes on pure titanium. Photosensitive electrodes (anodes) with the major composition of doped oxides were made using the titanium oxide nanotubes. The responses of the oxide nanotubes with different additives to both ultraviolet (Uv) and visible (Vis) light were illustrated. Research results of the enhance absorption of visible light by adding transition metals or metallic oxides including Co, Ni, Cu, Zn, CoO, CuO, NiO, ZnO into the nanotubes will be shown. Finally, test results of the photo electrochemical fuel cells using diluted glycerol as the fuel under the irradiation of natural light will be presented and the open circuit voltage values will be given. The photo electrochemical test results show that the doped titanium oxide nanotubes show the n-type behavior. The photo anodes can absorb both ultraviolet and visible light. But the response to the ultraviolet light is five to ten times stronger.

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12

Pooyodying, Pattarapon, Youl-Moon Sung e Jirapat Anuntahirunrat. "Synthesis of TiO2 Nanotubes Electrode for Photo Electrochemical cells Application". IOP Conference Series: Materials Science and Engineering 229 (setembro de 2017): 012020. http://dx.doi.org/10.1088/1757-899x/229/1/012020.

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13

Zhang, Xiaofan, Man Liu, Weiqian Kong e Hongbo Fan. "Recent advances in solar cells and photo-electrochemical water splitting by scanning electrochemical microscopy". Frontiers of Optoelectronics 11, n.º 4 (19 de novembro de 2018): 333–47. http://dx.doi.org/10.1007/s12200-018-0852-7.

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14

Yoo, Hyeonseok, Moonsu Kim, Yong-Tae Kim, Kiyoung Lee e Jinsub Choi. "Catalyst-Doped Anodic TiO2 Nanotubes: Binder-Free Electrodes for (Photo)Electrochemical Reactions". Catalysts 8, n.º 11 (17 de novembro de 2018): 555. http://dx.doi.org/10.3390/catal8110555.

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Nanotubes of the transition metal oxide, TiO2, prepared by electrochemical anodization have been investigated and utilized in many fields because of their specific physical and chemical properties. However, the usage of bare anodic TiO2 nanotubes in (photo)electrochemical reactions is limited by their higher charge transfer resistance and higher bandgaps than those of semiconductor or metal catalysts. In this review, we describe several techniques for doping TiO2 nanotubes with suitable catalysts or active materials to overcome the insulating properties of TiO2 and enhance its charge transfer reaction, and we suggest anodization parameters for the formation of TiO2 nanotubes. We then focus on the (photo)electrochemistry and photocatalysis-related applications of catalyst-doped anodic TiO2 nanotubes grown on Ti foil, including water electrolysis, photocatalysis, and solar cells. We also discuss key examples of the effects of doping and the resulting improvements in the efficiency of doped TiO2 electrodes for the desired (photo)electrochemical reactions.

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15

Busireddy, Manohar Reddy, Venkata Niladri Raju Mantena, Narendra Reddy Chereddy, Balaiah Shanigaram, Bhanuprakash Kotamarthi, Subhayan Biswas, Ganesh Datt Sharma e Jayathirtha Rao Vaidya. "A dithieno[3,2-b:2′,3′-d]pyrrole based, NIR absorbing, solution processable, small molecule donor for efficient bulk heterojunction solar cells". Physical Chemistry Chemical Physics 18, n.º 47 (2016): 32096–106. http://dx.doi.org/10.1039/c6cp06304g.

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16

Minegishi, Tsutomu. "(Invited) (Photo)Electrochemical Cells for Hydrogen Production and Carbon Dioxide Utilization". ECS Meeting Abstracts MA2022-01, n.º 36 (7 de julho de 2022): 1599. http://dx.doi.org/10.1149/ma2022-01361599mtgabs.

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Photoelectrochemical (PEC) and electrochemical cells can produce hydrogen from water and/or can produce useful chemicals from carbon dioxide, and, thus, are the key technologies for construction of carbon neutral society. Direct water splitting using photoelectrochemical cell is one of the promising means to produce hydrogen utilizing solar energy. The most important issue for photoelectrode the central of photoelectrochemical cell is narrow bandgap combined with large reaction driving force. Cu(In,Ga)Se2 (CIGS) which is employed as an absorber material in photovoltaic devices is one of the promising photocathode materials because of its long absorption edge of >1000 nm. [1] However, its driving force for water splitting is limited because of relatively shallow valence band maximum (VBM). The solid solution between ZnSe and CIGS (ZnSe-CIGS) is one of the promising candidates of photocathode material for water splitting because of its long absorption edge, ~900 nm, and large driving force, ~1.0 V. [2] In the present study, we investigated introduction of tellurium during ZnSe-CIGS thin films, and found the tellurium introduction increase grain size of ZnSe-CIGS film. The sequential deposition of Ga-rich layer and In-rich layer resulted in formation of composition gradient which facilitate charge separation thorough conduction band minimum (CBM) gradient. The ZnSe-CIGS base photocathode prepared with employing tellurium introduction and composition gradient showed significantly increased incident photon-to-current conversion efficiencies (IPCEs), close to unity. [3] The electrochemical cell with gas diffusion electrode (GDE) for carbon dioxide reduction reaction (CO2RR) can produce useful chemicals efficiently. Copper species are the catalysts with capable of producing C2 products such as C2H5OH and C2H4. In the present study, Cu2O was examined as an electrocatalyst for CO2RR. A GDE composed of carbon paper coated with Cu2O by electroplating method showed C2H4 production with faradaic efficiency (FE) of >50% and C2H5OH production with FE of >20% under the optimized conditions for >10 hours. References H. Kumagai, T. Minegishi, N. Sato, T. Yamada, J. Kubota, K. Domen, J. Mater. Chem. A, 3, 8300 (2015). H. Kaneko, T. Minegishi, M. Nakabayashi, N. Shibata, K. Domen, Angew.Chem. Int. Ed. 55,15329 (2016). T. Minegishi, S. Yamaguchi, M. Sugiyama, Appl. Phys. Lett. 119, 123905 (2021).

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17

Ifraemov, Raya, Subhabrata Mukhopadhyay, Illya Rozenberg e Idan Hod. "Metal–Organic-Framework-Based Photo-electrochemical Cells for Solar Fuel Generation". Journal of Physical Chemistry C 126, n.º 11 (14 de março de 2022): 5079–91. http://dx.doi.org/10.1021/acs.jpcc.2c00671.

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18

Mane, R. S., Moon-Young Yoon, Hoeil Chung e Sung-Hwan Han. "Co-deposition of TiO2/CdS films electrode for photo-electrochemical cells". Solar Energy 81, n.º 2 (fevereiro de 2007): 290–93. http://dx.doi.org/10.1016/j.solener.2006.03.012.

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19

Tiwari, Shikha, e Sanjay Tiwari. "Development of CdS based stable thin film photo electrochemical solar cells". Solar Energy Materials and Solar Cells 90, n.º 11 (julho de 2006): 1621–28. http://dx.doi.org/10.1016/j.solmat.2005.01.021.

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20

Todkar, V. V., R. S. Mane, C. D. Lokhande, Soo-Hyoung Lee e Sung-Hwan Han. "Use of amorphous monodispersed spinel film electrode in photo-electrochemical cells". Electrochimica Acta 51, n.º 22 (junho de 2006): 4674–79. http://dx.doi.org/10.1016/j.electacta.2005.12.041.

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21

Ghosh, Anima, Dhirendra K. Chaudhary, Amrita Biswas, Rajalingam Thangavel e G. Udayabhanu. "Correction: Solution-processed Cu2XSnS4 (X = Fe, Co, Ni) photo-electrochemical and thin film solar cells on vertically grown ZnO nanorod arrays". RSC Advances 8, n.º 54 (2018): 30832. http://dx.doi.org/10.1039/c8ra90072h.

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Correction for ‘Solution-processed Cu₂XSnS₄ (X = Fe, Co, Ni) photo-electrochemical and thin film solar cells on vertically grown ZnO nanorod arrays’ by Anima Ghosh et al., RSC Adv., 2016, 6, 115204–115212.

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22

Gnanasekar, Subashini, Prashant Sonar, Sagar M. Jain, Soon Kwan Jeong e Andrews Nirmala Grace. "Performance evaluation of a low-cost, novel vanadium nitride xerogel (VNXG) as a platinum-free electrocatalyst for dye-sensitized solar cells". RSC Advances 10, n.º 67 (2020): 41177–86. http://dx.doi.org/10.1039/d0ra06984a.

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A vanadium nitride xerogel (VNXG) was synthesised by a simple and effective method of ammonialising a vanadium pentoxide xerogel at a higher temperature. The electrochemical and photo-current studies were performed towards a counter electrode for DSSC.

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23

Meena, Shanker Lal. "Study of Photoactive Materials Used in Photo Electrochemical Cell for Solar Energy Conversion and Storage". Journal of Applied Science and Education (JASE) 3, n.º 1 (2023): 1–13. http://dx.doi.org/10.54060/jase.v3i1.40.

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Photoelectrochemical Cell is a device that absorbs light with a high-absorption electrolyte solution and provides energy for photo chemical reactions. Ponceau-S was used as a photosensitizer and EDTA served as a reducing agent in the study of photoelectronchemical cells. The photocurrent and photo potential were 1047.0 mV and 390.0 µA respectively. The highest power of the cell was 84.0 µW, with a conversion efficiency of 1.61%. The fill factor of the cell was 0.20. The photoelectric cell can function at this power level for 240.0 minutes in storage (performance). The effects of various parameters on the cell's electrical output were observed. In this study, a mechanism for photocurrent generation in Photoelectrochemical cells is proposed.

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24

Bergkamp, Jesse J., Benjamin D. Sherman, Ernesto Mariño-Ochoa, Rodrigo E. Palacios, Gonzalo Cosa, Thomas A. Moore, Devens Gust e Ana L. Moore. "Synthesis and characterization of silicon phthalocyanines bearing axial phenoxyl groups for attachment to semiconducting metal oxides". Journal of Porphyrins and Phthalocyanines 15, n.º 09n10 (setembro de 2011): 943–50. http://dx.doi.org/10.1142/s1088424611003847.

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A series of axial phenoxy substituted octabutoxy silicon phthalocyanines bearing ethyl carboxylic ester and diethyl phosphonate groups have been prepared from the corresponding phenols in pyridine. Axial bis-hydroxy silicon phthalocyanine was prepared using an adaptation of a reported protocol [1, 2] from the octabutoxy free-base phthalocyanine. The phenols bear either carboxylic ester or phosphonate groups, which upon deprotection can serve as anchoring groups for attaching the phthalocyanines to semiconducting metal oxides used in dye sensitized solar cells (DSSCs). All the phthalocyanines of the series absorb in the near infra-red region: 758–776 nm. The first oxidation potential for each phenoxy derivative occurs near 0.55 V vs. SCE as measured by cyclic voltammetry, with all falling within a 10 mV range. This indicates that these dyes will have sufficient energy in the photo-excited state to drive the reduction of protons to hydrogen. Taking into account the absorption and electrochemical potentials, these dyes are promising candidates for use in dual-threshold photo-electrochemical cells.

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25

Gagrani, Ankita, Mohammed Alsultan, Gerhard F. Swiegers e Takuya Tsuzuki. "Photo-Electrochemical Oxygen Evolution Reaction by Biomimetic CaMn2O4 Catalyst". Applied Sciences 9, n.º 11 (29 de maio de 2019): 2196. http://dx.doi.org/10.3390/app9112196.

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Calcium manganese oxide catalysts are a new class of redox catalysts with significant importance because of their structural similarity to natural oxygen-evolving complex in plant cells and the earth-abundant elemental constituents. In the present study, the photo-electrocatalytic properties of CaMn2O4 in water-splitting were investigated. CaMn2O4 powders with irregular shapes and nanowire shapes were synthesised using mechanochemical processing and a hydrothermal method, respectively. The anode in a photo-electrochemical cell was fabricated by embedding CaMn2O4 powders within polypyrrole. The results showed that CaMn2O4 induced a higher dark and light current in comparison to the control sample (polypyrrole alone). CaMn2O4 nanowires exhibited higher dark and light current in comparison to irregular-shaped CaMn2O4 powders. The difference was attributable to the higher surface area of nanowires compared to the irregular-shaped particles, rather than the difference in exposed crystal facets.

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26

J., Azeez. "Analysis of ZnO and Tio2 as An Effective Nanomaterials for the Development of DSSCs: A Review". International Journal of Research and Innovation in Applied Science IX, n.º I (2024): 208–13. http://dx.doi.org/10.51584/ijrias.2024.90118.

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Energy crisis and global warming are the two major problems facing us today. The search for the best effective photo-anode film for the development of Dye-sensitized solar cells (DSSCs) – a third generation organic cell, is very essential. ZnO and TiO2 had been reportedly used as nanomaterial for the development of DSSCs. This paper presents reviewed works on the analysis of major properties of these nanomaterials. X-ray diffraction (XRD) analysis, Microstructural and compositional analysis, and photo-electrochemical analysis were considered for these materials. Our analysis agreed well with many researchers who had claimed that TiO is the best photo-anode material for DSSCs.

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Hertkorn, D., M. Benkler, U. Gleißner, F. Büker, C. Megnin, C. Müller, T. Hanemann e H. Reinecke. "Morphology and oxygen vacancy investigation of strontium titanate-based photo electrochemical cells". Journal of Materials Science 50, n.º 1 (3 de setembro de 2014): 40–48. http://dx.doi.org/10.1007/s10853-014-8563-y.

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Husu, I., G. Rodio, E. Touloupakis, M. D. Lambreva, K. Buonasera, S. C. Litescu, M. T. Giardi e G. Rea. "Insights into photo-electrochemical sensing of herbicides driven by Chlamydomonas reinhardtii cells". Sensors and Actuators B: Chemical 185 (agosto de 2013): 321–30. http://dx.doi.org/10.1016/j.snb.2013.05.013.

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Tenholt, Carmen, Thomas Klassen e Mauricio Schieda. "Design of a Reference Model for Fast Optimization of Photo-Electrochemical Cells". ECS Meeting Abstracts MA2020-01, n.º 45 (1 de maio de 2020): 2582. http://dx.doi.org/10.1149/ma2020-01452582mtgabs.

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Tenholt, Carmen, Thomas Klassen e Mauricio Schieda. "Design of a Reference Model for Fast Optimization of Photo-Electrochemical Cells". ECS Meeting Abstracts MA2020-02, n.º 61 (23 de novembro de 2020): 3129. http://dx.doi.org/10.1149/ma2020-02613129mtgabs.

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Li, Xia, Yan Shuang Wei, Qian Qian Jin e Tie Zhen Ren. "Expanded Graphite/Carbon Nanotube as Counter Electrode for DSSCs". Advanced Materials Research 311-313 (agosto de 2011): 1246–49. http://dx.doi.org/10.4028/www.scientific.net/amr.311-313.1246.

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A kind of carbon nanotube/expanded graphite (EG/CNT) was used as counter electrodes for the DSSCs following five different weight ratios of 1:0, 1:1, 1:2, 2:1, and 0:1. The impedance spectra and J-V curves were recorded using the Zahner Zennium CIMPS system based on an IM6x electrochemical workstation. The dynamic parameters of the cells were discussed with the intensity-modulated photo current spectroscopy (IMPS) and the intensity modulated photo voltage spectroscopy (IMVS) using white light-emitting diode (75w/m2, 604nm, LED) as the light source.

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Brinkert, Katharina, Álvaro Romero-Calvo, Oemer Akay, Shaumica Saravanabavan e Eniola Sokalu. "(Keynote) Releasing the Bubbles: Efficient Phase Separation in (Photo-)Electrochemical Devices in Microgravity Environment". ECS Meeting Abstracts MA2023-01, n.º 56 (28 de agosto de 2023): 2715. http://dx.doi.org/10.1149/ma2023-01562715mtgabs.

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One of the major challenges human space exploration faces is the absence of buoyancy forces in orbit. Consequently, phase separation is severely hindered which impacts a large variety of space technologies including propellant management devices, heat transfer and life support systems e.g., during the production of oxygen and the recycling of carbon dioxide. Of particular interest are hereby (photo-)electrochemical (PEC) devices as they can produce essential chemicals such as oxygen and hydrogen in two set-ups: either, by coupling the electrochemical cell to external photovoltaic cells as currently utilized on the International Space Station or by direct utilization of sunlight in a monolithic device, where integrated semiconductor-electrocatalyst systems carry out the processes of light absorption, charge separation and catalysis in analogy to natural photosynthesis in one system. The latter device is particularly interesting for space applications due to present mass and volume constraints. Here, we discuss two combined approaches to overcome phase separation challenges in (photo-)electrolyzer systems in reduced gravitational environments: using the hydrogen evolution reaction (HER) as a model reaction, we combine nanostructured, hydrophilic electrocatalyst surfaces for efficient gas bubble desorption with magnetically-induced buoyancy to direct the produced hydrogen gas bubbles on specific trajectories away from the (photo-)electrode surface. (Photo-)current-voltage (J-V) profiles obtained in microgravity environments generated for 9.2 s at the Bremen Drop Tower show that our systems can operate with our two-fold approach near terrestrial efficiencies. Simulations of gas bubble trajectories accompany our experimental observations, allowing us to attribute the achieved phase separation in the PEC cells to the increased electrode wettability as well as the systematic use of diamagnetic and Lorentz forces.

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Katta, Venkata Seshaiah, Aparajita Das, Reshma Dileep K., Goutham Cilaveni, Supriya Pulipaka, Ganapathy Veerappan, Easwaramoorthi Ramasamy et al. "Vacancies induced enhancement in neodymium doped titania photoanodes based sensitized solar cells and photo-electrochemical cells". Solar Energy Materials and Solar Cells 220 (janeiro de 2021): 110843. http://dx.doi.org/10.1016/j.solmat.2020.110843.

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Shlosberg, Yaniv, Tünde N. Tóth, Benjamin Eichenbaum, Lee Keysar, Gadi Schuster e Noam Adir. "Electron Mediation and Photocurrent Enhancement in Dunalliela salina Driven Bio-Photo Electrochemical Cells". Catalysts 11, n.º 10 (10 de outubro de 2021): 1220. http://dx.doi.org/10.3390/catal11101220.

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In recent years, finding alternatives for fossil fuels has become a major concern. One promising solution is microorganism-based bio-photo electrochemical cells (BPECs) that utilize photosynthetic solar energy conversion as an energy source while absorbing CO2 from the atmosphere. It was previously reported that in cyanobacterial-based BPECs, the major endogenous electron mediator that can transfer electrons from the thylakoid membrane photosynthetic complexes and external anodes is NADPH. However, the question of whether the same electron transfer mechanism is also valid for live eukaryotic microalgae, in which NADPH must cross both the chloroplast outer membrane and the cell wall to be secreted from the cell has remained elusive. In this work, we show that NADPH is also the major endogenous electron mediator in the microalgae Dunalliela salina (Ds). We show that the ability of Ds to tolerate high salinity enables the production of a photocurrent that is 5–6 times greater than previously reported for freshwater cyanobacterial-based BPECs in the presence or absence of exogenous electron mediators. Additionally, we show that the electron mediator Vitamin B1 can also function as an electron mediator enhancing photocurrent production. Finally, we show that the addition of both FeCN and NADP+ to Ds has a synergistic effect enhancing the photocurrent beyond the effect of adding each mediator separately.

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Patil, P. S., C. D. Lokhande e S. H. Pawar. "Effect of temperature on photo-electrochemical properties of n-Fe2O3/KOH/C cells". Journal of Physics D: Applied Physics 22, n.º 4 (14 de abril de 1989): 550–54. http://dx.doi.org/10.1088/0022-3727/22/4/014.

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Fleig, J., G. Walch, G. C. Brunauer, B. Rotter, E. Esmaeli, J. Summhammer, A. K. Opitz e K. Ponweiser. "Mixed Conductors under Light: On the Way to Solid Oxide Photo-Electrochemical Cells". ECS Transactions 72, n.º 7 (19 de maio de 2016): 23–33. http://dx.doi.org/10.1149/07207.0023ecst.

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Takamatsu, Seiichi, Kazunori Hoshino, Kiyoshi Matsumoto, Tsutomu Miyasaka e Isao Shimoyama. "The photo charge of a bacterioRhodopsin electrochemical cells measured by a charge amplifier". IEICE Electronics Express 8, n.º 7 (2011): 505–11. http://dx.doi.org/10.1587/elex.8.505.

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Bayer, İlker, İnci Eroğlu e Lemi Türker. "Experimental insight into the performance characteristics of Ni-mesh semiconductor photo-electrochemical cells". Solar Energy Materials and Solar Cells 62, n.º 1-2 (abril de 2000): 43–49. http://dx.doi.org/10.1016/s0927-0248(99)00134-8.

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Mandal, K. C., e O. Savadogo. "Chemically deposited n-CdSe thin film photo-electrochemical cells: effects of Zn2+-modification". Journal of Materials Science 27, n.º 16 (1 de janeiro de 1992): 4355–60. http://dx.doi.org/10.1007/bf00541566.

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Hazra, Prasenjit, Atanu Jana e Jayati Datta. "Voltammetric deposition of BiCdTe composite films with improved functional properties for photo-electrochemical cells". New Journal of Chemistry 40, n.º 4 (2016): 3094–103. http://dx.doi.org/10.1039/c5nj03043a.

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Habelhames, Farid, Leila Lamiri, Zerguine Wided e Belkacem Nessark. "Optical and Photo-Electrochemical Properties of Conducting Polymer/Inorganic Semiconductor Nanoparticle". Advanced Materials Research 428 (janeiro de 2012): 78–83. http://dx.doi.org/10.4028/www.scientific.net/amr.428.78.

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Optical and photoelectrochemical properties of polybithiophene Poly (bTh) films electrochemically synthesized and modified with incorporation of silicon nanoparticles (n-Si or p-Si) dispersed in the electrolytic during polymerization were studied. The characterisation of these modified surface electrodes by Poly (bTh)+n-Si or Poly (bTh)+p-Si, was carried out by using the photocurrent measurements and UV-visible spectroscopy. Cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) have been used to investigate the electrochemical behaviour of the resulting materials. The results show that the photosensitive composite materials have good photoelectrochemical and optical properties, and it can be used as material for the photovoltaic cells applications.

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Lv, Zhibin, Hongwei Wu, Xin Cai, Yongping Fu, Dan Wang, Zengze Chu e Dechun Zou. "Influence of Electrolyte Refreshing on the Photoelectrochemical Performance of Fiber-Shaped Dye-Sensitized Solar Cells". International Journal of Photoenergy 2012 (2012): 1–8. http://dx.doi.org/10.1155/2012/104597.

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Given the convenient sealing of fiber-shaped dye-sensitized solar cells (FDSSCs), the electrolyte refreshing effect on the photo-electrochemical performance of FDSSCs was studied. The electron transport and interfacial recombination kinetics were also systematically investigated by electrochemical impedance spectroscopy. With increased electrolyte refreshing times from 0 to 10, the open-circuit voltage (Voc) and fill factor (FF) increased, whereas the photocurrent density (Jsc) and power conversion efficiency (PCE) significantly decreased. The increasedVocwas mainly ascribed to the electron recombination resistance (Rct, WE) at the TiO2/electrolyte interface and electron lifetime. The decreasedJscand PCE were due to dye desorption and the increase of series resistance. Further investigation proved that Li+played a vital role in increasingVocas electrolyte refreshing and Li+had more significant impact than TBP (tert-butyl pyridine) on maintaining highVoc.

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Chatterjee, Suman, e Indra Bahadur Karki. "Effect of Photoanodes on the Performance of Dye-Sensitized Solar Cells". Journal of the Institute of Engineering 15, n.º 3 (13 de outubro de 2020): 62–68. http://dx.doi.org/10.3126/jie.v15i3.32008.

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Dye sensitized Solar cell (DSSC) is a photo-electrochemical system which converts solar energy into electrical energy. In the present era DSSCs takes so much attention because of their considerably high efficiencies at a comparably low production cost. The nanostructured electrode plays a vital role in device properties. Originally, the nanostructured TiO2 were widely used as DSSC electrodes. Further, nanostructured ZnO has shown a great deal of research interest as the electrode material in DSSCs due to some of its fascinating properties. Compared to other semiconductors, it has unique properties such as large exciton binding energy, wide band gap, high breakdown strength, cohesion and exciton stability. In this paper, the construction and electron transport mechanism of DSSCs devices are described and a comparison of performances of DSSCs fabricated with ZnO or TiO2 photo electrodes was made in terms of its device parameters. This is further correlated with the band structure & density of states (DOS) of ZnO and TiO2 using Density functional theory (DFT) and finally the photovoltaic performance of ZnO and TiO2 based DSSCs was discussed to elucidate the differences.

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Chen, Yuzhu, e Meng Lin. "(Digital Presentation) Photo-Thermo-Electrochemical Cells for on-Demand Solar Power and Hydrogen Generation". ECS Meeting Abstracts MA2022-01, n.º 36 (7 de julho de 2022): 1560. http://dx.doi.org/10.1149/ma2022-01361560mtgabs.

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Converting solar energy into power and hydrogen provides a promising pathway to fulfilling instantaneous electricity demand (power generation) as well as continuous demand via storing energy in chemical bonds (hydrogen generation). Co-generation of power and hydrogen is of great interest due to its potential to overcome expensive electricity storage in conventional PV plus battery systems. Both solar thermochemistry processes and photo-electrochemical cells (PECs) are extensively explored technologies to produce solar hydrogen. The key challenges for solar thermochemistry processes are extremely high operating temperature (~ 1500 oC) and low demonstrated efficiency (< 1% for hydrogen generation). For PECs, the limited solar absorption together with sluggish electrochemical reactions, especially for OER, leads to limited theoretical solar fuel generation. Operating PECs at high temperature will lead to decreased photovoltage and interface stability. Inspired by the thermally regenerative batteries, we propose a photo-thermo-electrochemical (PTEC) device that uses the solid oxide-based moderate high temperature cell (~1000 ℃) as the photo-absorber for simultaneously converting concentrated solar radiation into heat and generating fuel or power electrochemically driven by the discharging power from the low temperature cell (~700 ℃). PTEC device enables full solar spectrum utilization, highly favorable thermodynamics and kinetics, and cost-effectiveness. A continuous PTEC device has two working modes, which are voltage differential (VD) mode and current differential (CD) mode. The current-voltage characteristics of a PTEC device are shown in Figure 1. It mainly consists of five parts. A high temperature cell (HTC) serves as a solar absorber and a low temperature cell (LTC) serves as heat recovery. Besides, the opposite electrochemical reactions take place in two cells meaning that HTC and LTC can also function as a hydrogen production as well as an electricity generator component, respectively. Heat exchanger(s) is placed between the HTC and LTC and hot fluids pass through a heat exchanger before entering LTC to reduce heat losses to environment as well as reducing input solar energy. The VD mode and CD mode can be realized in PTECs via controlling of DC-DC converter. In order to identify the main parameters, we develop a multi-physics model based on finite element method, including mass, heat and charge transfer, and electrochemical reactions. In addition, heat exchange is modeled by solving energy balance equation, DC-DC convertor is assumed by constant efficiency, and a lumped parameter model is used to describe solar receiver including energy losses of conduction and reradiation. This framework also allows us to provide design guidelines for PTEC devices with high solar-to-electricity (STE) efficiency and solar-to-hydrogen (STH) efficiency. The maximum STE and STH efficiency under reference conditions of PTEC device was found to be 4 % and 2 %. A further improved performance in terms of STE and STH efficiency are about 19 % and 16 %, respectively, via optimizing temperature configuration between HTC and LTC and material properties. It is also interesting to note that STH can reach higher than 80 % of STE at a large temperature difference, which shows a promising energy storage device by storing excessive electrical power in form of hydrogen. The main results show that the temperature of HTC and efficiency of heat exchange are key parameters to optimize PTEC efficiency. The performance of DC-DC convertor dominates STH efficiency. Besides, ionic conductivity of electrolyte can contribute to significantly expanding the operating current density range. The PTEC is a promising technology for solar energy conversion and storage as it is able to produce electricity and hydrogen in a single device. The solar conversion efficiency predicted with our numerical model supports that by optimizing the design and operational conditions, this technology can compete with existing solar fuel pathways. Figure 1

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Tripathi, Mridula, Ruby Upadhyay e Ashutosh Pandey. "Semiconductor photo-electrochemical solar cells based on admixing of nano-materials for renewable energy". International Journal of Ambient Energy 33, n.º 4 (dezembro de 2012): 171–76. http://dx.doi.org/10.1080/01430750.2012.686196.

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Justin Raj, C., Soo-Kyoung Kim, Kook-Hyun Yu e Hee-Je Kim. "Photo-electrochemical properties of variously-sized titanium dioxide nanoparticle-based dye-sensitized solar cells". Materials Science in Semiconductor Processing 26 (outubro de 2014): 354–59. http://dx.doi.org/10.1016/j.mssp.2014.04.040.

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Bandara, T. M. W. J., W. J. M. J. S. R. Jayasundara, M. A. K. L. Dissanayake, H. D. N. S. Fernando, M. Furlani, I. Albinsson e B. E. Mellander. "Quasi solid state polymer electrolyte with binary iodide salts for photo-electrochemical solar cells". International Journal of Hydrogen Energy 39, n.º 6 (fevereiro de 2014): 2997–3004. http://dx.doi.org/10.1016/j.ijhydene.2013.05.163.

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Shimura, Michiko, Kiyoaki Shakushiro e Yukio Shimura. "Photo-electrochemical solar cells with a SnO2-liquid junction sensitized with highly concentrated dyes". Journal of Applied Electrochemistry 16, n.º 5 (setembro de 1986): 683–92. http://dx.doi.org/10.1007/bf01006920.

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Ahmad, Zubair, Khasan S. Karimov, Farid Touati, M. Salman Ajmal, Taimoor Ali, Saif Haider Kayani, K. Kabutov, R. A. Shakoor e N. J. Al-Thani. "n-InAs based photo-thermo-electrochemical cells for conversion of solar to electrical energy". Journal of Electroanalytical Chemistry 775 (agosto de 2016): 267–72. http://dx.doi.org/10.1016/j.jelechem.2016.06.012.

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Zhao, Shuaitongze, e Shifeng Xu. "Semiconductor Photoanode Photoelectric Properties of Methanol Fuel Cells". Journal of Nanoelectronics and Optoelectronics 16, n.º 1 (1 de janeiro de 2021): 72–79. http://dx.doi.org/10.1166/jno.2021.2906.

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One-dimensional TiO2, ZnO, and Fe2O3 nanorod arrays are selected as the photocatalytic methanol fuel cell photoanodes, and a greenhouse catalytic methanol fuel cell device is designed. With the photo-generated holes' participation in fuel molecules' oxidation in the semiconductor electrode, chemical energy is converted into electric energy. Firstly, with pot-doped tin dioxide (TRS) as the substrate, TiO2, ZnO, and Fe2O3 nanorod arrays are prepared by hydrothermal method. TiO2 and ZnO are excellent photoelectric catalytic materials with similar energy band capability and strong separation capability for photo-generated charges in the energy band analysis. With a narrow band gap, Fe2O3 can be oxidized by water with visible light. In the experiment, different anodes' photoelectric properties are tested by the Mott-Schottky equation, cyclic voltammetry, and electrochemical analysis. The results show that the ZnO-based photoanode's maximum short-circuit current can reach 1.86 mA/cm2, and its open-circuit voltage can reach 1.15 V, the ZnO-based photoanode's 0.92 mA/cm2 and 1.36 V, and the Fe2O3-based photoanode's 0.08 mA/cm2 and 1.18 V. Compared with Fe2O3 electrodes, TiO2 and ZnO thin-film electrodes have better photocurrent conversion ability in dark, simulated sunlight, and visible light conditions. Fe2O3 electrodes can also generate strong instantaneous anode photocurrents after irradiation.

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