Journal
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
Volume 166, Issue 7, Pages F3305-F3310Publisher
ELECTROCHEMICAL SOC INC
DOI: 10.1149/2.0361907jes
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Funding
- U.S. Department of Energy, Advanced Research Projects Agency-Energy [DE-AR0000771]
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Hydroxide exchange membrane fuel cells (HEMFC) are a promising power source for automobiles due to their low cost. Here we focus on improving the beginning-of-life performance of HEMFCs to a higher level with poly(aryl piperidinium) (PAP) membranes and ionomers. We find that lower RH and backpressure in anode than cathode can eliminate anode flooding and cathode dryout so that a balanced water management can be achieved. We also find that PtRu/C is a better anode catalyst than Pt/Ketjen Black due to the presence of Ru and Pt/Vulcan XC-72 is a better cathode catalyst than Pt/Ketjen Black due to its better mass transport properties. Once the preferred operating conditions and materials incorporated into the same cell, our HEMFCs achieved a peak power density of 1.89 W cm(-2) in H-2/O-2 and 1.31 W cm(-2) in H-2/air. (c) The Author(s) 2019. Published by ECS. This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 License (CC BY, http://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse of the work in any medium, provided the original work is properly cited.
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