Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 7, Issue 50, Pages 27581-27585Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.5b07346
Keywords
polymer electrolyte membrane fuel cell; membrane electrolyte assembly; double-layered electrode; decal transfer method; catalyst-coated gas diffusion layer; water removal
Funding
- New & Renewable Energy Core Technology Program of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) - Ministry of Trade, Industry & Energy, Republic of Korea [20143030031340]
- Technology Innovation Program Of the Korea Evaluation Institute of Industrial Technology (KEIT) - Ministry of Trade, Industry & Energy, Republic of Korea [10052823]
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The membrane electrolyte assembly (MBA) designed in this study utilizes a double-layered cathode: an inner catalyst layer prepared by a conventional decal transfer method and an outer catalyst layer directly coated on a gas diffusion layer. The double-layered structure was used to improve the interfacial contact between the catalyst layer and membrane, to increase catalyst utilization and to modify the removal of product water from the cathode. Based on a series of MEAs with double-layered cathodes with an overall Pt loading fixed at 0.4 mg cm(-2) and different ratios of inner-to-outer Pt loading the MBA with an inner layer of 0.3 mg Pt cm(-2) and an outer layer of 0.1 mg Pt cm(-2) exhibited the best performance. This performance was better than that of the conventional single-layered electrode by 13.5% at a current density of 1.4 A cm(-2).
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