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Polybenzimidazoles for High Temperature Fuel Cell Applications

✍ Scribed by Hyoung-Juhn Kim; Seong Jin An; Ju-Yong Kim; Jin Kyoung Moon; Sung Yong Cho; Yeong Chan Eun; Hae-Kwon Yoon; Youngmi Park; Ho-Jin Kweon; Eun-Mi Shin

Publisher
John Wiley and Sons
Year
2004
Tongue
English
Weight
102 KB
Volume
25
Category
Article
ISSN
1022-1336

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✦ Synopsis

Abstract

Summary: Fuel cells were designed for high temperature operations. Poly[2,2′‐(m‐phenylene)‐5,5′‐bibenzimidazole] (PBI) was synthesized in a solution of P~2~O~5~, CH~3~SO~3~H, and CF~3~SO~3~H. The PBI was dissolved in a mixture of CF~3~CO~2~H and H~3~PO~4~ and the solution was used for the preparation of Pt catalyst slurry for membrane electrode assembly. The single cell showed a current density of 280 mA · cm^−2^ at a cell voltage of 0.5 V with feeds of H~2~ and O~2~ at 160 °C and without external humidification.
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