文献类型：期刊文献

英文题名：Effects of CeO2 pre-calcined at different temperatures on the performance of Pt/CeO2-C electrocatalyst for methanol oxidation reaction

作者：Li, Guo-qing[1];Wen, Pu-kang[1];Gao, Chen-qiang[2];Zhang, Tian-yi[2];Hu, Jun-yang[2];Zhang, Yu-hao[2];Guan, Shi-you[3];Li, Qing-feng[4];Li, Bing[1]

机构：[1]East China Univ Sci & Technol, Sch Mech & Power Engn, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Sch Mat Sci & Engn, Shanghai 200237, Peoples R China;[3]Shanghai Univ, Inst Sustainable Energy, Coll Sci, Shanghai 200237, Peoples R China;[4]Tech Univ Denmark, Dept Energy Convers & Storage, DK-2800 Lyngby, Denmark

年份：2021

卷号：28

期号：7

起止页码：1224

外文期刊名：INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS

收录：;EI(收录号：20211110081341);WOS:【SCI-EXPANDED(收录号:WOS:000628473400001)】；

基金：This work was financially supported by the National Natural Science Foundation of China (No. 51774145).

语种：英文

外文关键词：direct methanol fuel cell; platinum; cerium dioxide-carbon; electrocatalyst; methanol oxidation

摘要：Pt/CeO2-C catalysts with CeO2 pre-calcined at 300-600 degrees C were synthesized by combining hydrothermal calcination and wet impregnation. The effects of the pre-calcined CeO2 on the performance of Pt/CeO2-C catalysts in methanol oxidation were investigated. The Pt/CeO2-C catalysts with pre-calcined CeO2 at 300-600 degrees C showed an average particle size of 2.6-2.9 nm and exhibited better methanol electro-oxidation catalytic activity than the commercial Pt/C catalyst. In specific, the Pt/CeO2-C catalysts with pre-calcined CeO2 at 400 degrees C displayed the highest electrochemical surface area value of 68.14 m(2)center dot g(-1) and I-f/I-b ratio (the ratio of the forward scanning peak current density (I-f) and the backward scanning peak current density (I-b)) of 1.26, which are considerably larger than those (53.23 m(2)center dot g(-1) and 0.79, respectively) of the commercial Pt/C catalyst, implying greatly enhanced CO tolerance.