Size effects of platinum particles@CNT on HER and ORR performance

作     者：Zhonghua Ma Han Tian Ge Meng Lingxin Peng Yafeng Chen Chang Chen Ziwei Chang Xiangzhi Cui Lianjun Wang Wan Jiang Jianlin Shi 马忠华;田汉;孟歌;彭凌欣;陈亚丰;陈昶;畅紫薇;崔香枝;王连军;江莞;施剑林

作者机构：State Key Laboratory for Modification of Chemical Fibers and Polymer Materials&College of Materials Science and EngineeringDonghua UniversityShanghai 201620China State Key Lab of High Performance Ceramics and Superfine MicrostructureShanghai Institute of CeramicsChinese Academy of SciencesShanghai 200050China Center of Materials Science and Optoelectronics EngineeringUniversity of Chinese Academy of SciencesBeijing 100049China 

基　　金：support from the Natural Science Foundation of Shanghai(19ZR1479400) the State Key Laboratory for Modication of Chemical Fibers and Polymer Materials,Donghua University(KF1818) the State Key Laboratory of Advanced Technology for Materials Synthesis and Processing(Wuhan University of Technology) 

出 版 物：《Science China Materials》 (中国科学（材料科学（英文版）)

年 卷 期：2020年第63卷第12期

页      码：2517-2529页

摘      要：Platinum(Pt)is an efficient catalyst for hydrogen evolution reaction(HER)and oxygen reduction reaction(ORR),but the debate of the relevance between the Pt particle size and its electrocatalytic activity still *** strong metal–support interaction(SMSI)between the metal and carrier causes the charge transfer and mass transport from the support to the ***,Pt species(0.5 wt.%)with various particle sizes supported on carbon nanotubes(CNTs)have been synthesized by a photo-reduction ***^1.5 nm-sized Pt catalyst shows much higher HER performance than the counterparts in all pH solutions,and the mass activity of it is even 23–36 times that of Pt/*** for ORR,the^3 nm-sized Pt catalyst exhibits the optimal performance,and the mass activity is 3 times and even 16 times that of Pt/C in acidic and alkaline media,*** high HER and ORR performances of the^1.5 nm-and^3 nm-sized Pt catalysts benefit from the SMSI between Pt and the CNTs matrix and the higher ratio of face sites to edge sites,which is meaningful for the design of efficient electrocatalysts for renewable energy application.

主 题 词：size effect HER ORR platinum strong metal-support interaction 

学科分类：0808[工学-自动化类] 081705[081705] 08[工学] 0817[工学-轻工类] 

核心收录：

D　O　I：10.1007/s40843-020-1449-2

馆 藏 号：203980462...