高等学校化学学报

高等学校化学学报

• 研究论文 • 上一篇    下一篇

SO2气体对质子交换膜燃料电池阴极性能的影响

杨代军1,2, 马建新1,3, 马晓伟3, 周伟1,3, 徐麟4, 邬敏忠4, 万钢1   

    1. 同济大学新能源汽车工程中心, 上海 201804;
    2. 华东理工大学资源与环境工程学院， 上海 200237;
    3. 同济大学汽车学院氢能技术研究所,
    4. 上海燃料电池动力系统有限公司, 上海 201804
  • 收稿日期:2006-06-09 修回日期:1900-01-01 出版日期:2007-04-10 发布日期:2007-04-10
  • 通讯作者: 马建新

Effects of SO2 on Cathode Performance of Proton Exchange Membrane Fuel Cell

YANG Dai-Jun1,2, MA Jian-Xin1,3*, MA Xiao-Wei3, ZHOU Wei1,3, XU Lin4, WU Min-Zhong4, WAN Gang1   

    1. Clean Energy Automotive Engineering Center, Tongji University, Shanghai 201804, China;
    2. School of Resource & Environmental Engineering, East China University of Science & Technology, Shanghai 200237, China;
    3. Institute for Hydrogen Technologies, School for Automotive Studies, Tongji University,
    4. Shanghai Fuel Cell Powertrain System Co. Ltd., Shanghai 201804, China
  • Received:2006-06-09 Revised:1900-01-01 Online:2007-04-10 Published:2007-04-10
  • Contact: MA Jian-Xin

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摘要： 将5×10-8~3.2×10-6(空气中的体积含量)的SO2通入质子交换膜燃料电池(PEMFC)单电池阴极, 研究了SO2对PEMFC性能的影响. 实验得到的电压-时间(V-t)曲线和极化(V-I)曲线表明, 空气中SO2含量达到5×10-7时, 将对PEMFC的性能产生显著的和不可逆的影响, 且SO2浓度越大电池性能的下降幅度越大. 对SO2影响前后的电化学交流阻抗谱(EIS)的解析表明, 电池电荷传递阻抗(Rct)的变化可逆, 而阴极的表面状态发生了不完全可逆的变化. 循环伏安(CV)实验数据进一步证明, SO2毒化后阴极的活性电化学表面积(EAS)缩小.

关键词: 质子交换膜燃料电池, 阴极, 二氧化硫

Abstract: SO2 with volume fractions from 5×10-8 to 3.2×10-6 was introduced into the cathode of a single Proton Exchange Membrane Fuel Cell(PEMFC) to investigate the effect of SO2 on the performance of the PEMFC. Voltage-time(V-t) curve and polarization(V-I) curves show that 5×10-7 SO2 can cause significant and irreversible effect on the cell performance, and the performance decay increases with SO2 volume fraction increasing. Using electrochemical impedance spectroscopy(EIS), it was found that after being poisoned by 5×10-7 SO2 for 130 h, the charge transfer resistance(Rct) was reversible after cathode purging for 20 h and cyclic voltammetry(CV) test, however the surface state of the cathode was permanently changed. A reduction of the electrochemical active surface(EAS) of the cathode, which contributed to the irreversible cell performance decay, was confirmed by cyclic voltammograms.

Key words: Proton exchange membrane fuel cell(PEMFC), Cathode, Sulfur dioxide

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