高等学校化学学报

高等学校化学学报 ›› 2005, Vol. 26 ›› Issue (12): 2302.

• 研究论文 • 上一篇    下一篇

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

何荣桓1,李庆峰2,BjerrumNielsJ.2   

  1. 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
  • 收稿日期:2004-11-09 出版日期:1905-03-14 发布日期:1905-03-14
  • 通讯作者: 何荣桓(1965年出生),女,博士,教授,主要从事质子交换膜燃料电池的研究.E-mail:huan56@mail.edu.cn
  • 基金资助:

    2004年新世纪优秀人才支持计划项目(批准号：NCET-04-0277)资助.

Phosphoric Acid Doped ab-PBI Membranes and Its Applications in High Temperature PEMFC

HE Rong-Huan1*, LI Qing-Feng2,  BJERRUM Niels J.2   

  1. 1. Department of Chemistry, College of Science, Northeastern University, Shenyang 110004, China;
     2. Department of Chemistry, Technical University of Denmark,  Lyngby DK-2800, Denmark
  • Received:2004-11-09 Online:1905-03-14 Published:1905-03-14
  • Contact: HE Rong-Huan;E-mail:huan56@mail.edu.cn

被引次数

20

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, 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

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.

Key words: Polybenzimidazole; High temperature PEMFC; Proton exchange membrane(PEM); Proton conductivity, Polybenzimidazole, High temperature PEMFC, Proton exchange membrane(PEM), Proton conductivity

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