钴-聚吡咯-碳载Pt催化剂的制备及其单电池性能研究

张路 林瑞 黄真 范仁杰

引用本文: 张路, 林瑞, 黄真, 范仁杰. 钴-聚吡咯-碳载Pt催化剂的制备及其单电池性能研究[J]. 燃料化学学报, 2015, 43(3): 352-359. shu
Citation:  ZHANG Lu, LIN Rui, HUANG Zhen, FAN Ren-jie. Study on preparation of cobalt-polypyrrole-carbon black supported Pt catalyst and its single cell performance[J]. Journal of Fuel Chemistry and Technology, 2015, 43(3): 352-359. shu

钴-聚吡咯-碳载Pt催化剂的制备及其单电池性能研究

    通讯作者: 林瑞,Tel:+86-21-69583837,E-mail:ruilin@tongji.edu.cn。
  • 基金项目:

    国家自然科学基金(21276199) (21276199)

    中央高校基本科研业务费专项资金及同济大学青年英才计划攀登高层次人才项目。 

摘要: 采用脉冲微波辅助化学还原法制备了钴-聚吡咯-碳载Pt催化剂(Pt/Co-PPy-C),并将其作为阴极催化剂,组装单电池。考察了电池运行温度和氢气/空气计量比对单电池性能的影响,并与商业Pt/C催化剂进行了耐久性实验比较。 结果表明,运行温度为70 ℃,氢气与空气的计量比为1.2:2.5时单电池性能最佳。600 mA/cm2恒电流稳定运行150 h耐久性测试中,以Pt/Co-PPy-C为阴极催化剂的单电池平均电压衰退率为0.119 mV/h,是商业Pt/C催化剂的26%。耐久性测试前后,单电池的阴极电荷传递阻抗为7.176和8.767 Ω,均比商业Pt/C催化剂阻抗小;Pt颗粒粒径从2.46 nm增长到3.18 nm,均小于商业Pt/C催化剂的粒径。这表明,以Pt/Co-PPy-C催化剂为阴极催化剂制备的单电池性能优良,在质子交换膜燃料电池中有广泛的应用前景。

English

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  • 收稿日期:  2014-09-09
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