文献类型：期刊文献

英文题名：Porous Pt Aggregates Deposited on a Carbon Nanotube Film with High Catalytic Activity and Durability

作者：Chen, Yun[1];Wang, Xiao Xia[2];Li, Bing[2];Huang, Xin Xin[2];Wang, Jian Nong[2]

机构：[1]Shanghai Jiao Tong Univ, Sch Mat Sci & Engn, 800 Dong Chuan Rd, Shanghai 200240, Peoples R China;[2]East China Univ Sci & Technol, Sch Mech & Power Engn, Nano Carbon Res Ctr, 130 Meilong Rd, Shanghai 200237, Peoples R China

年份：2016

卷号：3

期号：11

起止页码：1908

外文期刊名：CHEMELECTROCHEM

收录：;EI(收录号：20163702796362);WOS:【SCI-EXPANDED(收录号:WOS:000388382300024)】；

基金：This work was supported by National Natural Science Foundation of China (project no.: 51271077, U1362104).

语种：英文

外文关键词：carbon nanotube films; electrochemical deposition; fuel cells; platinum catalysts; porous structures

摘要：For decades, the low durability of Pt-based catalysts has hindered the application of fuel cells. Here, Pt catalysts with different morphologies and porous structures are prepared by electrochemical deposition on a carbon nanotube film without the use of any surfactants or templates. The Pt particles with spherical, flower-like, and cubic morphologies consist of fine polyhedron- and flake-shaped Pt crystals. Owing to the presence of faceted crystals, the Pt particles are assembled with porous frame structures. As an example of potential applications, such Pt crystals are demonstrated to have high catalytic activity and durability in hydrogen oxidation and oxygen reduction reactions under harsh electrochemical cycling conditions. Even in the case of the largest particles consisting of fine polyhedrons, the catalytic performance is much superior to that of a commercial Pt/C catalyst. Therefore, this study suggests a new strategy for morphology control of Pt catalysts and their performance optimization.