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磷酸掺杂的ab-PBI膜及其在高温质子交换膜燃料电池中的应用
引用本文:何荣桓,李庆峰,Bjerrum Niels J.磷酸掺杂的ab-PBI膜及其在高温质子交换膜燃料电池中的应用[J].高等学校化学学报,2005,26(12):2302-2305.
作者姓名:何荣桓  李庆峰  Bjerrum Niels J
作者单位:1. 东北大学理学院化学系,沈阳,110004
2. Department of Chemistry, Technical University of Denmark, Lyngby DK-2800, Denmark
基金项目:新世纪优秀人才支持计划
摘    要:以3,4-二氨基苯甲酸为单体合成了ab-聚苯并咪唑.研究了磷酸掺杂的该质子交换膜在80-200℃,不同湿度以及不同酸掺杂量下的质子电导率.该质子交换膜可作为燃料电池的膜电解质,在常压不增湿的条件下,可使电池运行温度达到200℃.

关 键 词:聚苯并咪唑  高温质子交换膜燃料电池  质子交换膜  质子电导率
文章编号:0251-0790(2005)12-2302-04
收稿时间:11 9 2004 12:00AM
修稿时间:2004-11-09

Phosphoric Acid Doped ab-PBI Membranes and Its Applications in High Temperature PEMFC
HE Rong-Huan,LI Qing-Feng,Bjerrum Niels J.Phosphoric Acid Doped ab-PBI Membranes and Its Applications in High Temperature PEMFC[J].Chemical Research In Chinese Universities,2005,26(12):2302-2305.
Authors:HE Rong-Huan  LI Qing-Feng  Bjerrum Niels J
Institution:1. Department of Chemistry, College of Science, Northeastern University, Shenyang 110004, China ; 2. Department of Chemistry, Technical University of Denmark, Lyngby DK-2800, Denmark
Abstract:Poly(2,5-benzimidazole)(ab-PBI) was prepared from 3,4-diaminobenzoic acid via a polymerization reaction.The obtained polymer exhibits an excellent thermal stability at temperatures up to 500 ℃.The membranes of ab-PBI are readily to be doped with phosphoric acid at room temperature.The acid doped ab-PBI membranes present proton conductivity in a level of 10-2-10-1 S/cm at temperatures above 100 ℃.The conductivity of the acid doped ab-PBI membranes was studied in a temperature range of 80 to 200 ℃ under different relative humidities and with different acid doping levels.Proton exchange membrance fuel cell(PEMFC) test results indicated that about 200 mW/cm2 of power density was obtained with phosphoric acid doped ab-PBI as the electrolyte under atmospheric pressure at 200 ℃ and without humidification.
Keywords:Polybenzimidazole  High temperature PEMFC  Proton exchange membrane(PEM)  Proton conductivity
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