Design of an advanced membrane electrode assembly employing a double-layered cathode for a PEM fuel cell

Title
Design of an advanced membrane electrode assembly employing a double-layered cathode for a PEM fuel cell
Authors
김경희엄광섭김민중유성종장종현김형준조은애
Keywords
PEMFC; MEA; double-layer; cathode
Issue Date
2015-12
Publisher
ACS Applied Materials & Interfaces
Citation
VOL 7, NO 50, 27581-27585
Abstract
The membrane electrolyte assembly (MEA) 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 MEA 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.
URI
http://pubs.kist.re.kr/handle/201004/58449
ISSN
19448244
Appears in Collections:
KIST Publication > Article
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