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Pt4ZrO2/C Cathode Catalyst with Excellent Durability for High Temperature PEMFC Based on H3PO4 Doped PBI

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Abstract:

Pt4ZrO2/C was prepared and compared with commercial Pt/C (46.6 wt.% TKK) in terms of the durability as cathode catalyst in a high temperature proton exchange membrane fuel cell (PEMFC) based on H3PO4 doped polybenzimidazole (PBI) by a potential sweep test. The catalysts before and after the potential sweep test were characterized by RDE, XRD, TEM and ICP-AES. After 3000 cycles potential sweep test, the overall performance loss of the Pt4ZrO2/C membrane electrode assembly (MEA) was less than that of the Pt/C MEA. In brief, the preliminary results indicate that Pt4ZrO2/C catalyst is a good candidate of Pt/C catalyst in high temperature PEMFC based on H3PO4 doped PBI for achieving longer cell life-time and higher cell performance.

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Periodical:

Materials Science Forum (Volumes 561-565)

Pages:

1589-1592

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.561-565.1589

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Online since:

October 2007

Authors:

Gang Liu, Hua Min Zhang, Yuan Wei Ma

Keywords:

Durability, High-Temperature PEMFC, Potential Sweep Test, Pt4ZrO2/C

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© 2007 Trans Tech Publications Ltd. All Rights Reserved

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