直接甲醇燃料电池双催化层阳极的稳定性研究  

Durability study of double catalytic layer anode for direct methanol fuel cell

作　　者：赵新生[1] 孙公权[1] 樊小颖[1] 汪国雄[1] 孙海[1] 毛庆[1] 王素力[1] 辛勤[1] 

机构地区：[1]中国科学院大连化学物理研究所

出　　处：《电源技术》2005年第12期791-794,共4页Chinese Journal of Power Sources

基　　金：国家高技术发展计划项目(2003AA517040);国家自然科学基金资助项目(20173060);中国科学院知识创新工程重要方向和领域前沿项目(KGCX2-SW-310;K2003D2)

摘　　要：主要研究了双催化层阳极的稳定性,考察了直接甲醇燃料电池(DMFC)在623h寿命测试过程中的运行规律和性能衰退因素,探索了恢复电极性能或缓解电极性能衰退的方法。结果表明,对阳极催化层进行电位扫描(Potentialsweep),可以氧化去除催化剂表面的吸附物种,一定程度上恢复电极性能或缓解电极性能衰退过程。电池寿命测试及扫描电子显微镜(SEM)和能量散射X射线谱(EDX)分析结果说明双催化层阳极结构具有良好的稳定性。In the present study, the durability performance of double catalytic layer anode for DMFC was investigated. During 623h lifetime, the factors of performance degradation were analyzed, and the recovery or mitigation strategies were explored. Long-term test results indicated that the double layer catalytic exhibits good performance and stable microstructure. The degradation can be timely mitigated by a potential sweep, which is a good method to eliminate the adsorbed intermediate species on the catalyst surface from methanol electro-oxidation.

关 键 词：直接甲醇燃料电池 双催化层阳极 电位扫描 

分 类 号：TM911.4[电气工程—电力电子与电力传动]