Imidazole and 1-methyl imidazole in phosphoric acid doped polybenzimidazole, electrolyte for fuel cells

被引：197

作者：

Schechter, A

Savinell, RF

机构：

[1] Case Western Reserve Univ, Dept Chem Engn, Cleveland, OH 44106 USA

[2] Case Western Reserve Univ, EB Yeager Ctr Electrochem Sci, Cleveland, OH 44106 USA

[3] Case Western Reserve Univ, Dept Chem Engn, Cleveland, OH 44106 USA

来源：

SOLID STATE IONICS | 2002年 / 147卷 / 1-2期

关键词：

fuel cell (FC); phosphoric acid (PA); imidazole (Im); conductivity; polybenzimidazole (PBI);

D O I：

10.1016/S0167-2738(02)00040-1

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Imidazole and 1-methyl imidazole (Me-Im) were used as additives in polybenzimidazole (PBI) equilibrated with phosphoric acid (PA), a system shown to be a high-temperature proton-conducting polymer electrolyte. The influence of different concentrations of this additive on the conductivity of these membranes was measured by a four-probe conductivity measurement, at temperatures in the range of 80-200 degreesC, under various humidity conditions. Correlation was found between the conductivity of liquid solutions of concentrated phosphoric acid and that of H3PO4 in the PBI membranes. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：181 / 187

页数：7

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