Hybrid proton-conducting membranes for polymer electrolyte fuel cells phosphomolybdic acid doped poly(2,5-benzimidazole)-(ABPBI-H3PMo12O40)

被引：72
作者：
Gómez-Romero, P
Asensio, JA
Borrós, S
机构：
[1] CSIC, Inst Ciencia Mat Barcelona, E-08193 Barcelona, Spain
[2] Univ Ramon Llull, Inst Quim Sarria, E-08017 Barcelona, Spain
来源：
ELECTROCHIMICA ACTA | 2005年 / 50卷 / 24期
关键词：
polybenzimidazole; PBI; ABPBI; heteropolyacid; polyoxometalate; phosphomolybdic acid; hybrid materials; proton conductor; fuel cell membrane; proton exchange membranes; PEM fuel cells;
D O I：
10.1016/j.electacta.2005.02.029
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
The synthesis and characterization of a novel hybrid organic-inorganic material formed by phosphomolybdic acid H3Mo12O40 (PMo12) and poly(2,5-benzimidazole) (ABPBI) is reported. This material, composed of two proton-conducting components, can be cast in the form of membranes from methanesulfonic acid (MSA) solutions. Upon impregnation with phosphoric acid, the hybrid membranes present higher conductivity than the best ABPBI polymer membranes impregnated in the same conditions. These electrolyte membranes are stable up to 200 degrees C, and have a proton conductivity of 3 x 10(-2) S cm(-1) at 185 degrees C without humidification. These properties make them very good candidates as membranes for polymer electrolyte membrane fuel cells (PEMFC) at temperatures of 100-200 degrees C. (C) 2005 Elsevier Ltd. All rights reserved.
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收藏
页码：4715 / 4720
页数：6
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