催化学报

催化学报 ›› 2012, Vol. 33 ›› Issue (2): 222-229.DOI: 10.3724/SP.J.1088.2012.10947

• 综述 • 上一篇    下一篇

燃料电池Pt 基核壳结构电催化剂的最新研究进展

张海艳 1,2, 曹春晖 2,3, 赵健 1,2, 林瑞 2,3,b, 马建新 1,2,3,a   

  1. 1华东理工大学资源与环境工程学院, 上海 200237; 2同济大学新能源汽车工程中心, 上海 201804; 3同济大学汽车学院, 上海 201804
  • 收稿日期:2011-09-30 修回日期:2011-11-21 出版日期:2012-02-20 发布日期:2015-07-27

Recent Development of Pt-Based Core-Shell Structured Electrocatalysts in Fuel Cells

ZHANG Haiyan1,2, CAO Chunhui2,3, ZHAO Jian1,2, LIN Rui2,3,b, MA Jianxin1,2,3,a   

  1. 1School of Resource and Environmental Engineering, East China University of Science and Technology, Shanghai 200237, China; 2Clean Energy Automotive Engineering Center, Tongji University, Shanghai 201804, China; 3School of Automotive Studies, Tongji University, Shanghai 201804, China
  • Received:2011-09-30 Revised:2011-11-21 Online:2012-02-20 Published:2015-07-27

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1924

被引次数

78

摘要： 综述了用于燃料电池的 Pt 基核壳结构电催化剂的制备方法和表征方法的最新研究进展. 首先, 详细介绍了核壳结构催化剂的制备方法, 主要包括胶体法、电化学法和化学还原法等. 其中胶体法的应用最为广泛, 制备过程简单易控; 电化学法和化学还原法在最近几年得到了迅速发展, 并有望用于核壳结构电催化剂的批量化生产. 其次, 简单阐述了核壳结构电催化剂特用的表征方法. 其中高角度环形暗场-扫描透射电子显微镜是近年来发展的一种新技术, 它利用暗场强度与原子序数的比例关系可以有效地表征核壳电催化剂的特殊结构. 最后, 总结了存在的问题并展望了可能的发展方向.

关键词: 燃料电池, 铂基催化剂, 核壳结构, 氧气还原反应, 欠电位沉积法

Abstract: Cost, durability, and fuel supply infrastructure remain the key problems barricading the successful commercialization of fuel cells. As for the proton exchange membrane fuel cells, the cost and durability of key materials come from Pt catalysts used in the fuel cells. Due to the various cost and resource issues regarding Pt, it is important for researchers to develop low-Pt fuel cell catalysts. Recently, core-shell structured electrocatalysts have attracted increasing attention because of their unique structure in reducing the amount of Pt. The recent de-velopment of the preparation methods and characterization techniques for core-shell structured catalysts are reviewed. First, an introduction to the preparation methods for the synthesis of core-shell structured electrocatalysts was presented, including the colloid method, electro-chemical method, and chemical reduction method. Among these methods, the colloid method is the most facile and controllable and has already been widely employed in the synthesis. Electrochemical and chemical reduction methods are the most promising methods that have been developed in the past several years. Then, the characterization techniques were discussed in details. Among these techniques, the high-angle annular dark field-scanning transmission electron microscopy developed during recent years is regarded as an effective way to characterize the core-shell structured catalysts. Finally, the application problems and some research trends were discussed and summarized.

Key words: fuel cell, platinum-based catalyst, core-shell structure, oxygen reduction reaction, under potential deposition