文献类型：期刊文献

英文题名：Molten-Salt Electrochemical-Assisted Synthesis of the CeO2-OV@GC Composite-Supported Pt Clusters with a Pt-O-Ce Structure for the Oxygen Reduction Reaction

作者：Fan, Chenming[1];Dou, Shixue[2];Zhan, Xiaoqiang[3];Li, Shenggang[5];Wang, Qiang[4];Li, Bing[1]

机构：[1]East China Univ Sci & Technol, Sch Mech & Power Engn, Shanghai 200237, Peoples R China;[2]Univ Shanghai Sci & Technol, Inst Energy Mat Sci, Shanghai 200093, Peoples R China;[3]Ningbo Univ Technol, Inst Micro Nano Mat & Devices, Ningbo 315211, Peoples R China;[4]Chinese Acad Sci, Shanghai Inst Microsyst & Informat Technol, 2020 X Lab, Shanghai 200050, Peoples R China;[5]Chinese Acad Sci, Shanghai Adv Res Inst, CAS Key Lab Lowcarbon Sci & Technol, Shanghai 201210, Peoples R China

年份：2024

卷号：24

期号：23

起止页码：6957

外文期刊名：NANO LETTERS

收录：;EI(收录号：20242216184979);WOS:【SCI-EXPANDED(收录号:WOS:001234458200001)】；

基金：This work was financially supported by the National Natural Science Foundation of China (Nos. 52074130, 51774145, and 52204323) and the Engineering Research Center of Resource Utilization of Carbon-Containing Waste with Carbon Neutrality Ministry of Education.

语种：英文

外文关键词：platinum clusters; composite supports; molten-saltelectrochemical-assisted synthesis; oxygen reduction reaction

摘要：Highly active and robust Pt-based electrocatalysts for an oxygen reduction reaction (ORR) are of crucial significance for the development of proton exchange membrane fuel cells (PEMFCs). Herein, the high-loading and well-dispersive Pt clusters on graphitic carbon-supported CeO2 with abundant oxygen vacancies (Pt-AC/CeO2-O-V@GC) were successfully fabricated by a molten-salt electrochemical-assisted method. The bonding of Pt with the highly electronegative O induces charge redistribution through the Pt-O-Ce structure, thus reducing the adsorption energies of oxygen-containing species. Such a Pt-AC/CeO2-O-V@GC electrocatalyst exhibits a greatly enhanced ORR performance with a mass activity of 0.41 +/- 0.02 Amg(Pt)(-1) at 0.9 V versus a reversible hydrogen electrode, which is 2.7 times the value of a commercial Pt/C catalyst and shows negligible activity decay after 20000 cycles of accelerated degradation tests. It is anticipated that this work will provide enlightening guidance on the controllable synthesis and rational design of high-performance Pt-based electrocatalysts for PEMFCs.