文献类型：期刊文献

英文题名：Rapid Fabrication of Defective CuInP2S6 Nanosheets for Efficient CO2-to-Formate Conversion over Wide Current Densities

作者：Liu, Ya[1];Zhang, Meng[2];Qian, Xitang[3];Hou, Guoyu[1];Li, Yicheng[1];Liu, Yanxiu[1];Li, Xingqiu[1];Guan, Shixian[1];Chen, Junjie[1];Shao, Minhua[3,4,5];Zhang, Yu[1]

机构：[1]East China Univ Sci & Technol, Sch Mech & Power Engn, 130 Meilong Rd, Shanghai 200237, Peoples R China;[2]Shanxi Univ, Inst Opto Elect, State Key Lab Quantum Opt Technol & Devices, Taiyuan 030006, Peoples R China;[3]Hong Kong Univ Sci & Technol, Dept Chem & Biol Engn, Clear Water Bay, Hong Kong 999077, Peoples R China;[4]Hong Kong Univ Sci & Technol, Energy Inst, Clear Watery Bay, Hong Kong 999077, Peoples R China;[5]Hong Kong Univ Sci & Technol, Fok Ying Tung Res Inst, Guangzhou Key Lab Electrochem Energy Storage Techn, Guangzhou 511458, Peoples R China

年份：2025

卷号：64

期号：51

外文期刊名：ANGEWANDTE CHEMIE-INTERNATIONAL EDITION

收录：;EI(收录号：20254319380825);WOS:【SCI-EXPANDED(收录号:WOS:001597714500001)】；

基金：This work was supported by the National Natural ScienceFoundation of China (22479048 and 22109044), NaturalScience Foundation of Shanghai, China (22ZR1418500),start-up funds from the East China University of Science and Technology, and the Fundamental Research Funds forthe Central Universities. This work was also supported bythe Research Grant Council (JLFS/P-602/24) and Innovation and Technology Commission via the Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution, Hong Kong Branch of the National Precious Metals Material Engineering Research Center of the Hong Kong Special Administrative Region, Guangzhou Science and Technology Bureau (2024A03J0609),and the Research Grants Council of the Hong Kong SpecialAdministrative Region, China (HKUST PDFS2324-6S07).

语种：英文

外文关键词：CO2 reduction reaction; Electrocatalysis; Formate production; S vacancies

摘要：Electrochemical CO2 reduction reaction (CO2RR) to produce value-added chemicals offers a promising approach to mitigate global warming and address the energy crisis. However, the development of highly selective and durable catalysts that perform reliably across varying operational conditions remains challenging. In this work, we report the synthesis of lithium-intercalated CuInP2S6 (Li-CIPS) with a layered structure via a one-step chemical vapor transport method. Compared to pristine CuInP2S6, lithium intercalation in Li-CIPS facilitates the rapid production of ultrathin CuInP2S6 nanosheets through simple soaking in water. Experimental and theoretical investigations reveal that these ultrathin Li-CIPS nanosheets contain abundant sulfur vacancies (Vs), which can substantially enhance the CO2RR activity while suppressing the competing hydrogen evolution reaction. As a result, the Li-CIPS catalyst achieves over 90% Faradaic efficiency (FE) for formate production across wide current densities ranging from 100 to 800 mA cm(-2), and it maintains stable operation over 100 h at 200 mA cm(-2). This study highlights a promising and selective AMP(2)X(6)-based electrocatalyst for efficient CO2-to-formate conversion in practical applications.