高等学校化学学报

高等学校化学学报 ›› 2005, Vol. 26 ›› Issue (1): 125.

• 研究论文 • 上一篇    下一篇

碳纸对燃料电池自增湿性能的影响

王诚, 毛宗强, 徐景明, 谢晓峰, 杨立寨   

  1. 清华大学核能与新能源技术研究院, 北京 100084
  • 收稿日期:2004-01-06 出版日期:2005-01-10 发布日期:2005-01-10
  • 通讯作者: 毛宗强(1947年出生),男,教授,博士生导师,从事氢能及燃料电池研究.E-mail:maozq@tsinghua.edu.cn E-mail:maozq@tsinghua.edu.cn
  • 基金资助:

    国家“九七三”计划氢能领域项目(批准号:G2000026410)资助

Influence of Carbon Paper on Self-humidifying Performance of PEMFC

WANG Cheng, MAO Zong-Qiang, XU Jing-Ming, XIE Xiao-Feng, YANG Li-Zhai   

  1. Institute of Nuclear Energy and New Energy Technology, Tsinghua University, Beijing 100084, China
  • Received:2004-01-06 Online:2005-01-10 Published:2005-01-10

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被引次数

13

摘要： 使用TGP-H-028(0.28mm),TGP-H-060(0.19mm),TGP-H-030(0.11mm)等3种Toray碳纸制备膜电极,将组装燃料电池进行极化曲线与交流阻抗分析发现,厚碳纸TGP-H-028对自增湿发电性能略为有利,其最大功率密度比TGP-H-030薄碳纸高0.05W/cm2左右;用聚四氟乙烯乳液疏水处理TorayTGP-H-060碳纸,制备的MEA的自增湿电性能随着聚四氟乙烯质量分数(20%～40%)的升高而增大,最大功率密度升高至0.25W/cm2左右.当聚四氟乙烯质量分数继续升高到60%时,电性能开始下降,并比质量分数为40%的聚四氟乙烯的电性能低.

关键词: 燃料电池, 质子交换膜, 自增湿, 碳纸, 电极

Abstract: To study the effect of carbon paper on self-humidifying performance of proton exchange membrane fuel cell(PEMFC), the membrane electrode assemblies(MEAs) were prepared by three types of Toray carbon papers TGP-H-028(0.28 mm), TGP-H-060(0.19 mm) and TGP-H-030(0.11 mm), and single PEM fuel cells were assembled by the TGP-H-028 carbon papers treated with PTFE latex of different mass fractions for the experiment studies of polarization and AC impedance. The results showed that the thick carbon paper of TGP-H-028 had a better self-humidifying performance than other carbon papers, and its peak power density increased 0.05 W/cm2 comparing with that of thin carbon paper TGP-H-030; moreover, the self-humidifying performance of MEA increased with increasing PTFE mass fractions in the range of 20%—40%, the peak power density could increase about 0.25 W/cm2. But the self-humidifying performance of the MEA with TGP-H-028 disposed by 60% PTFE was lower than that disposed by 40% PTFE. Finally, the microstructure, pore distribution, and hydrophobicity of the carbon papers were analyzed by methods of SEM, intrusion Hg measurement and surface tension measurement.

Key words: Fuel cell, Proton exchange membrane, Self-humidifying, Carbon paper, Electrode

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