文献类型：期刊文献

英文题名：Super-Coordinated Nickel N4Ni1O2 Site Single-Atom Catalyst for Selective H2O2 Electrosynthesis at High Current Densities

作者：Xiao, Chuqian[1];Cheng, Ling[2];Zhu, Yihua[1];Wang, Gengchao[1];Chen, Luyang[1];Wang, Yating[1];Chen, Rongzhen[1];Li, Yuhang[1];Li, Chunzhong[1,2]

机构：[1]East China Univ Sci & Technol, Shanghai Engn Res Ctr Hierarch Nanomat, Frontiers Sci Ctr Mat & Dynam Chem,Minist Educ, Key Lab Ultrafine Mat,Sch Mat Sci & Engn, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Sch Chem Engn, Shanghai 200237, Peoples R China

年份：2022

卷号：61

期号：38

外文期刊名：ANGEWANDTE CHEMIE-INTERNATIONAL EDITION

收录：;EI(收录号：20223412586574);WOS:【SCI-EXPANDED(收录号:WOS:000840895600001)】；

基金：This work was supported by the National Natural Science Foundation of China (22178104, 21838003, 91834301, 22008069), the Shanghai Scientific and Technological Innovation Project (18JC1410500, 19JC1410400), the Innovation Program of Shanghai Municipal Education Commission, "the Fundamental Research Funds for the Central Universities" (222201718002), and the Shanghai Sailing Program (20YF1410200). The authors thank Zhong Chongfeng from Shiyanjia Lab () for the X-ray absorption spectroscopy measurements and analyses.

语种：英文

外文关键词：Electrocatalysis; Hydrogen Peroxide; Nickel; Single-Atom Catalyst; Super Coordination Number

摘要：Electrochemical production of hydrogen peroxide (H2O2) from O-2 on single-atom catalysts has attracted great attention, yet the quest for robust catalysts is driven by achieving >90 % Faradaic efficiency (FE) under industrial-relevant current densities (>100 mA cm(-2)). Herein we synthesize a catalyst that contains single nickel site coordinated by four nitrogen and two oxygen atoms (i.e., N4Ni1O2) via involving carboxyl functionalized multiwall carbon nanotubes as a substrate to provide extra O coordination to the regular NiN4 site. It has a cathodic energy efficiency of approximately 82 % and a H2O2 FE of around 96 % at 200 mA cm(-2) current density, outperforming the reported single-atom catalysts for H2O2 electrosynthesis.