HT-PEMFC耐CO多层复合结构阳极研究  

Study on multilayer composite anode for HT-PEMFC with enhanced tolerance towards CO

作　　者：刘林涛 夏章讯[1] 魏伟[1] 王素力[1] 孙公权[1] LIU Lintao;XIA Zhangxun;WEI Wei;WANG Suli;SUN Gongquan(Dalian Institute of Chemical Physics,Chinese Academy of Sciences,Dalian Liaoning 116023,China;University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]中国科学院大连化学物理研究所,辽宁大连116023 [2]中国科学院大学,北京100049

出　　处：《电源技术》2022年第2期153-156,共4页Chinese Journal of Power Sources

基　　金：国家自然科学基金重大研究计划集成项目(91834301);中国科学院大连化学物理研究所创新基金项目(DICP I202023)。

摘　　要：高温聚合物电解质膜燃料电池(HT-PEMFC)使用富氢重整气代替纯氢进料时,其中高浓度CO(可达3×10^(-2))会导致电极毒化,使电池性能降低。采用Pt/C和PtRu/C催化剂制备多层结构阳极,研究了不同阳极结构在重整气进料时对电池性能的影响,优化得到最佳阳极结构(内侧Pt/C、外侧PtRu/C复合阳极)。与传统Pt/C阳极相比,采用3×10^(-2) CO/H_(2)进料,在160℃、0.5 A/cm^(2)下,单体电池电压提高了48.2%(160 mV),并对该多层复合电极耐毒化机制进行了探讨。When the hydrogen-rich reforming gas is used instead of pure hydrogen in high temperature polymer electrolyte membrane fuel cell(HT-PEMFC),high concentration of CO(3×10^(-2))can poison electrode and decrease the performance of cell.Pt/C and PtRu/C catalysts were used to prepare multilayer structure anodes,the effects of different anode structures on the cell performance were investigated when reforming gas was fed,and the optimal anode structure(composite anode of Pt/C inner-layer and PtRu/C outer-layer)was optimized.Compared with conventional Pt/C anode,the cell voltage increases by 48.2%(160 mV)at 160℃and 0.5 A/cm^(2) with 3×10^(-2) CO/H_(2).The CO-tolerance mechanism of the multilayer composite anode was discussed.

关 键 词：高温质子交换膜燃料电池 一氧化碳 电极结构 耐受性 

分 类 号：TM911.4[电气工程—电力电子与电力传动]