期刊
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
卷 160, 期 11, 页码 F1258-F1274出版社
ELECTROCHEMICAL SOC INC
DOI: 10.1149/2.049311jes
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资金
- Office of Naval Research Young Investigator Program [N00014-10-1-0752]
- Office of Naval Research/United States of America Department of Defense for Defense University Research Instrumentation Program (DURIP)
Alkaline fuel cells containing anion exchange membrane electrolytes (i.e., solid-state alkaline fuel cells - SAFCs) promise to provide high power densities without platinum group metal catalysts. In the past decade, SAFC performance has improved substantially due to improvements in electrode binders that facilitate good membrane-electrode contact and ionic conductivity in the electrode layer. However, the alkaline (in)stability of AEMs is a long-standing challenge that currently precludes commercialization of this technology. To date, there have not been any satisfactory strategies or approaches to adequately assess an AEM's suitability for SAFC applications. Here, we report an all-encompassing best practices approach to evaluate a leading AEM candidate (poly(2,6-dimethyl 1,4-phenylene) oxide (PPO) with quaternary ammonium groups) for SAFCs. Additionally, this work reports an excellent peak power density of 294 mW cm(-2) when the fuel cell was operated with hydrogen-oxygen. This high fuel cell performance was attained by painting the electrodes directly onto the membrane to minimize membrane-electrode contact resistance losses. (C) 2013 The Electrochemical Society. All rights reserved.
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