关键词: 催化剂, 核壳结构, 燃料电池, 制备及表征

Abstract: Core-shell structured catalyst is recognized as a promising catalyst for large scale commercialization of PEM fuel cells，as it can significantly enhance the utilization of precious platinum，reduce the amount of platinum catalyst used and sharply save the cost of fuel cells. Investigation on core-shell structured catalyst is becoming one of the hottest topics in fuel cell field. This paper is aimed to introduce the latest developments and achievements on the design，preparation technology，and investigations on the effects of core composition and structure on the performance of core-shell structured catalyst，as well as the latest development of characterization techniques for core-shell structure. Furthermore，prospects for the development of new preparation technology and the application of this type catalyst are discussed. Research directions are suggested to advance the future works in this field，i.e.，it is expected to achieve the commercialization of proton exchange membrane fuel cell through the development or improvement of the preparation process of the core-shell structured catalysts with controllability on morphology，high activity and low Pt platinum loading.

Key words: catalyst, core?shell structure, fuel cell, preparation and characterization