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Polybenzimidazoles for High Temperature Fuel Cell Applications
Author(s) -
Kim HyoungJuhn,
An Seong Jin,
Kim JuYong,
Moon Jin Kyoung,
Cho Sung Yong,
Eun Yeong Chan,
Yoon HaeKwon,
Park Youngmi,
Kweon HoJin,
Shin EunMi
Publication year - 2004
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/marc.200400167
Subject(s) - membrane electrode assembly , fuel cells , electrode , slurry , catalysis , membrane , chemical engineering , materials science , phenylene , current density , polymer chemistry , chemistry , polymer , organic chemistry , composite material , anode , biochemistry , physics , quantum mechanics , engineering
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.