期刊
JOURNAL OF POWER SOURCES
卷 245, 期 -, 页码 171-174出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jpowsour.2013.06.141
关键词
Solid acids; Inorganic proton conductors; Hydrogen evolution; Non-precious catalysts
资金
- Office of Naval Research [N000141210887]
- Office Of The Director
- EPSCoR [1004083] Funding Source: National Science Foundation
Unsupported nickel was evaluated as an electrocatalyst material in an electrochemical hydrogen pump using the superprotonic solid acid CsH2PO4 as a proton exchange membrane. In humidified hydrogen at 250 degrees C, Ni-based electrodes display a stable proton reduction current of 207 mA cm(-2) at a -0.2 V cell potential. Electrodes utilizing carbon-supported Pt catalysts evolved hydrogen at 558 mA cm(-2) under identical conditions. Hydrogen evolution and oxidation are reversible on Pt, but hydrogen oxidation activity is virtually absent on Ni. (C) 2013 Elsevier B.V. All rights reserved.
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