首页> 中文期刊> 《化工进展》 >金属化合物作直接甲醇燃料电池阳极催化剂载体的研究进展

金属化合物作直接甲醇燃料电池阳极催化剂载体的研究进展

         

摘要

As support materials of anode catalyst in direct methanol fuel cell(DMFC),metal compounds have attracted more and more attentions due to their higher corrosion resistance in strong oxidizing environment compared with carbon materials. This review focuses on the improved performance of anode catalysts with metal oxides,metal carbides and metal nitrides as support. In general,the stability of Pt-based anode catalyst is significantly improved by using metal compound supports,whose morphology and composition have significant impacts on the particle size,dispersion, utilization and catalytic activity of active components,especially,on the change of electronic structure and energy density distribution of active components as a result of the interaction between metal compound supports and active components,which directly determines the catalytic performance of Pt-based catalyst for methanol oxidation. Based on this review, the architecture and function design of metal compounds is an important research direction in the future.%作为直接甲醇燃料电池阳极催化剂的载体,金属化合物因其在强氧化环境中拥有比碳材料更高的耐腐蚀性而日益受到关注.本文重点综述了金属氧化物、金属碳化物和金属氮化物作为载体材料对催化剂性能的改善.总结发现,金属化合物载体的使用对铂基催化剂的稳定性有显著提高,而该类载体形貌和组成对活性组分的粒径、分散度、利用率及催化活性有着重大影响,尤其是金属化合物载体与活性组分间的相互作用对活性组分微观电子结构和能级密度分布的改变,更是直接决定着铂基催化剂对甲醇氧化的催化性能.根据对相关研究结果的总结,提出对金属化合物载体进行结构和功能设计是今后该领域的重要研究方向.

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