文献类型：期刊文献

英文题名：In-situ synthesis of N/S co-doped Cu-based graphene-like nanosheets as high efficiency electrocatalysts for oxygen reduction reaction

作者：Zhang, Mingyuan[1];Hu, Shuozhen[1,2];Zhang, Xinsheng[1,2]

机构：[1]East China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Sch Chem Engn, State Key Lab Chem Engn, Shanghai 200237, Peoples R China

年份：2023

卷号：48

期号：48

起止页码：18268

外文期刊名：INTERNATIONAL JOURNAL OF HYDROGEN ENERGY

收录：;EI(收录号：20230913645852);WOS:【SCI-EXPANDED(收录号:WOS:000998272800001)】；

基金：Acknowledgements This work is financially supported by National Natural Science Foundation of China (Project 22005097) . The authors thank Research Center of Analysis and Test of East China University of Science and Technology for the help on the characterization.

语种：英文

外文关键词：Cu; N; S doped graphene-like; nanosheets; Cu-N structure; C-S-C structure; Cu2S crystals; Oxygen reduction reaction

摘要：Heteroatom-doped transition metal electrocatalysts supported on carbon materials are widely-recognized as the promising catalysts for oxygen reduction reaction (ORR). Here, we describe the one-pot method of preparing the Cu-based PAT1-Cux/KB catalyst with Cu/N/S doped graphene-like nanosheets. For the obtained catalyst, Cu2+ ions catalyzed the poly-merized 2-aminothiazole organic monomers into nanosheet and simultaneously in-situ doped Cu, N, S atoms into the carbon matrix. The amount of Cu2+ ions affected the ge-ometry structure, as well as the formation of Cu-N structure and C-S-C bond of PAT1- Cux/KB catalyst. Cu2S crystals with ORR catalytic ability were also generated in the cata-lysts. The Cu-N structure in the catalyst regulates the d-electron density of inert copper through the synergistic effect of electronic connection between copper and nitrogen atoms. N and S doped in the carbon skeleton changes the spin density and charge distribution of near carbon atoms. Therefore, PAT1-Cu0.33/KB catalyst with graphene-like nanosheets, Cu-N structure, C-S-C bond, and Cu2S crystals exhibits excellent activities with E1/2 = 0.84 V and high limit-current density of 5.25 mA cm-2 for ORR.(c) 2023 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.