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Development and testing of a novel catalyst-coated membrane with platinum-free catalysts for alkaline water electrolysis
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SYSNO ASEP 0505870 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Development and testing of a novel catalyst-coated membrane with platinum-free catalysts for alkaline water electrolysis Author(s) Hnát, J. (CZ)
Plevová, M. (CZ)
Tufa, R. A. (CZ)
Žitka, Jan (UMCH-V) RID
Paidar, M. (CZ)
Bouzek, K. (CZ)Source Title International Journal of Hydrogen Energy. - : Elsevier - ISSN 0360-3199
Roč. 44, č. 33 (2019), s. 17493-17504Number of pages 12 s. Language eng - English Country US - United States Keywords catalyst-coated membrane ; alkaline environment ; water electrolysis Subject RIV CG - Electrochemistry OECD category Electrochemistry (dry cells, batteries, fuel cells, corrosion metals, electrolysis) R&D Projects GA16-20728S GA ČR - Czech Science Foundation (CSF) Method of publishing Limited access Institutional support UMCH-V - RVO:61389013 UT WOS 000476964900006 EID SCOPUS 85066270196 DOI 10.1016/j.ijhydene.2019.05.054 Annotation A stable, platinum-free catalyst-coated anion-exchange membrane with a promising performance for alkaline water electrolysis as an energy conversion technology was prepared and tested. A hot plate spraying technique used to deposit electrodes 35 or 120 μm thick on the surface of an anion-selective polymer electrolyte membrane. These thicknesses of 35 and 120 μm corresponding to the catalyst load of 2.5 and 10 mg cm−2. The platinum free catalysts based on NiCo2O4 for anode and NiFe2O4 for cathode were used together with anion selective polymer binder in the catalyst/binder ratio equal to 9:1. The performance of the prepared membrane-electrode assembly was verified under conditions of alkaline water electrolysis using different concentrations of liquid electrolyte ranging from 1 to 15 wt% KOH. The electrolyser performance was compared to a cell utilizing a catalyst-coated Ni foam as the electrodes. The prepared membrane-electrode assembly stability at a current load of 0.25 A cm−2 was verified by a 72-hour electrolysis test. The results of the experiments indicated the possibility of a significant reduction of the catalyst loading compared to a catalyst-coated substrate approach. Workplace Institute of Macromolecular Chemistry Contact Eva Čechová, cechova@imc.cas.cz ; Tel.: 296 809 358 Year of Publishing 2020 Electronic address https://www.sciencedirect.com/science/article/pii/S0360319919318853?via%3Dihub
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