Pt基金属间化合物电催化剂  

Pt-Based Intermetallic Compounds as Electrocatalysts

作　　者：李翔[1] 安丽[1] 张丽娟[1] 李钒[1] 汪夏燕[1] 夏定国[2] 

机构地区：[1]北京工业大学环境与能源工程学院,北京100124 [2]北京大学工学院,北京100871

出　　处：《化学进展》2011年第2期501-508,共8页Progress in Chemistry

基　　金：国家高技术发展计划(863)项目(No.2007AA03Z219);北京市教委项目(No.JC031015200801);国家自然科学基金项目(No.50974006)资助

摘　　要：Pt基合金化是提高Pt系催化剂的催化活性、选择性及稳定性的常用手段,Pt基合金按其结构有序性可分为两类,一类是Pt基无序固溶相合金,常用的商用PtRu催化剂即属此类;另一类则是结构有序的Pt基金属间化合物。Pt基金属间化合物由于其特有的优点而近年来被广泛地关注。本文综述了近年来金属间化合物在低温燃料电池中的应用进展,主要包括金属间化合物的制备技术进展,介绍几种Pt基金属间化合物及非Pt基金属间化合物在低温燃料电池中的应用,并展望了金属间化合物在低温燃料电池中未来的研究方向。In order to improve catalytic activity and stability, alloying Pt with a non-noble metal has proved to be a successful strategy for the development of new electrocatalysts for low temperature fuel cell. An alloy is a mixture containing two or more metallic elements or metallic and nonmetallic elements usually fused together or dissolving into each other when molten. Solid solution is the alloy when two metals （or nonmetallic） are completely soluble in liquid state and also completely soluble in solid state. Usually, the atomic positions and stoichiometric of the solid solution are uncertain, for example, commercial electrocatalyst PtRu alloy. Intermetallic compound is a compound of two or more metallic elements or metallic and nonmetallic elements. Usually, the atomic positions and stoichiometric of the intermetallic compound are fixed. Pt-based intermetallic compounds have been paid more and more attentions by researchers due to its many excellent properties. In this review paper, we present the recent progress of Pt-based intermetallic compounds used in low temperature fuel cell. The synthesis method and some Pt- based intermetallic compounds are present. The future development of this research field is prospected.

关 键 词：金属间化合物 电催化剂 低温燃料电池 电催化 

分 类 号：O643.36[理学—物理化学] TM911.46[理学—化学]