文献类型：期刊文献

英文题名：Facile synthesis of Pt5La nanoalloys as the enhanced electrocatalysts for oxygen reduction reaction and methanol oxidation reaction

作者：Fan, Chenming[1];Wen, Pukang[1];Li, Guoqing[1];Li, Guomin[1];Gu, Jingjiu[1];Li, Qingfeng[3];Li, Bing[1,2]

机构：[1]East China Univ Sci & Technol, Sch Mech & Power Engn, 130 Meilong Rd, Shanghai 200237, Peoples R China;[2]Longyan Univ, Collaborat Innovat Ctr Clean Energy, 1 North Dongxiao Rd, Longyan 364012, Peoples R China;[3]Tech Univ Denmark, Dept Energy Convers & Storage, DK-2800 Lyngby, Denmark

年份：2022

卷号：894

外文期刊名：JOURNAL OF ALLOYS AND COMPOUNDS

收录：;EI(收录号：20214411091736);WOS:【SCI-EXPANDED(收录号:WOS:000714679600003)】；

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

语种：英文

外文关键词：Pt5La nanoalloy; electrocatalyst; PEMFCs; oxygen reaction reduction; methanol oxidation reaction

摘要：Platinum-rare earth metal (Pt-RE) nanoalloys are the most promising candidates for fuel cells because of their superior activity and stability for oxygen reduction reaction (ORR) and methanol oxidation reaction (MOR). However, the preparation of Pt-RE nanoalloys with chemical method is still challenge due to their huge standard reduction potential differences and the oxophilicity of the latter. Herein, this work provides a novel and facile strategy for the chemical synthesis of Pt5La nanoalloys to apply in both ORR and MOR. Pt5La nanoalloys are synthesized by co-reduction of Pt2+ and La3+ in LaCl3 and H2PtCl6 solution containing carbon powder and C2H4N4 by first heating at 550 degrees C for 2 h under N-2, and then heating to 700 degrees C under H-2/Ar for 2 h. The as-synthesized Pt5La nanoalloys present a high alloying degree at 700 degrees C, with the average particle size of 7.8 nm. The results indicate Pt5La nanoalloys lead to a significant enhancement in ORR and MOR performances related to the commercial JM-Pt/C catalyst. (C) 2021 Published by Elsevier B.V.