Affiliation:
1. Key Laboratory of Superlight Materials and Surface Technology (Ministry of Education) College of Material Science and Chemical Engineering, Harbin Engineering University Harbin 150001 China
2. Department: Interdisciplinary Research Center for Sustainable Energy Science and Engineering (IRC4SE2) Zhengzhou University, School of Chemical Engineering, Zhengzhou University Zhengzhou 450001 Henan China
3. Key Laboratory of Cold Region Urban and Rural Human Settlement Environment Science and Technology, Ministry of Industry and Information Technology School of Architecture and Design, Harbin Institute of Technology Harbin 150001, China
Abstract
AbstractChemical manipulation of surface functional groups on two‐dimensional transition metal carbides and/or nitrides (MXenes) provides a wide range of design and application prospects. However, achieving rapid targeted modification of surface groups remains a significant challenge. Herein, we propose a general strategy to swiftly shear and customize surface groups on Ti3C2Tx−MXene via the flash Joule heating (FJH) reaction within 1 s. Successfully, MXenes with 9 target terminations, including VII A (F, Cl, Br, or I), VI A (O, S, or Se), and V A (N or P), either single or multiple, are synthesized, with a surface content of up to about 76 %. The impact of these terminations is systematically analyzed on electrochemical performance, demonstrating that VI A and V A terminations have higher electrochemical activity than VII A. Particularly, N‐, S‐, and O‐terminated MXenes exhibit enhanced specific capacities and undecayed cycling performance. These findings offer valuable insights for the surface engineering design and performance optimization of functional materials.
Funder
China Postdoctoral Science Foundation
National Natural Science Foundation of China
Education Department of Henan Province