文献类型：期刊文献

英文题名：One-Step Construction of Ordered Sulfur-Terminated Tantalum Carbide MXene for Efficient Overall Water Splitting

作者：Wu, Tong[1,2,3];Pang, Xin[2,3];Zhao, Siwei[4];Xu, Shumao[2];Liu, Zhanqiang[5];Li, Yongsheng[1];Huang, Fuqiang[2,3,4]

机构：[1]East China Univ Sci & Technol, Lab Low Dimens Mat Chem, Sch Mat Sci & Engn, Key Lab Ultrafine Mat,Minist Educ, Shanghai 200237, Peoples R China;[2]Chinese Acad Sci, State Key Lab High Performance Ceram & Superfine, Shanghai Inst Ceram, Shanghai 200050, Peoples R China;[3]Univ Chinese Acad Sci, Ctr Mat Sci & Optoelect Engn, Beijing 100049, Peoples R China;[4]Peking Univ, State Key Lab Rare Earth Mat Chem & Applicat, Coll Chem & Mol Engn, Beijing 100871, Peoples R China;[5]Huzhou Univ, Dept Mat Chem, 759 East Erhuan Rd, Huzhou 313000, Peoples R China

年份：2022

卷号：3

期号：3

外文期刊名：SMALL STRUCTURES

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000735906800001)】；

基金：T.W., X.P., and S.Z. contributed equally to this work. This research was financially supported by Shanghai Science and Technology Innovation Action Plan (20dz1204400) and Leading Talents in Shanghai (2018). The theoretical calculation was supported by High-performance Computing Platform of Peking University.

语种：英文

外文关键词：alkaline water splitting; exfoliation; lamellar structure; metallic conductivity

摘要：Hydrogen production from electrolyzed water plays an important role in clean energy system, but the current reported non-noble metal catalysts still need to be paired with commercial Pt/C or RuO2 for overall water splitting. It is still a great challenge to develop high activity and stability bifunctional catalysts for both oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) in the same medium. To date, the emerging 2D MXenes have been extensively studied in the field of electrocatalysis because of their interesting surface physicochemical characteristics. However, the preparation process is very complex and difficult. Their intrinsic electrocatalytic properties are not good enough due to the disordered terminal groups (-OH/-F/-Cl). Herein, the traditional preparation procedure is optimized, and the 2D layered compound Ta2CS2 is directly synthesized by a one-step method. Unlike the typical MXenes with disorderly terminated groups, Ta2CS2 is terminated orderly with S atoms, and it shows excellent conductivity and electrochemical properties. Based on the great performance for OER and HER, the exfoliated Ta2CS2 (Ta2CS2-E) is found to be an outstanding bifunctional catalyst of MXenes-based materials for overall water splitting.