2D titanium carbide(MXene) electrodes with lower-F surface for high performance lithium-ion batteries

查看全文 作　　者：Ming [1,2]Lu;Haojie [2,3]Li;Wenjuan [2,4]Han;Junnan [2]Chen;Wen [2]Shi;Jiaheng [3]Wang;Xiang-Min [5]Meng;Jingang [6]Qi;Haibo [4]Li;Bingsen [2]Zhang;Wei [1]Zhang;Weitao [1]Zheng

机构地区：[1]Key Laboratory of Automobile Materials MOE, School of Materials Science & Engineering, Electron Microscopy Center, International Center of Future Science, Jilin University;[2]Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences;[3]Department of Mechanical Engineering, Hefei University of Technology;[4]Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University;[5]Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences;[6]School of Material Science & Engineering, Liaoning University of Technology

出　　处：《Journal of Energy Chemistry》索引2019年第28卷第4期,共6页

基　　金：financial support provided by the National Key R&D Program of China (2016YFA0200400);the Jilin Province/Jilin University co-Construction Project-Funds for New Materials (SXGJSF2017-3, Branch-2/440050316A36);the National Natural Science Foundation of China (Grant nos. 91545119, 21761132025, 21773269 and 51372095);the Youth Innovation Promotion Association CAS (Grant no. 2015152);Strategic Priority Research Program of the Chinese Academy of Sciences Chinese Academy of Sciences (Grant nos. XDA09030103 and XDA09040203);the Program for JLU Science and Technology Innovative Research Team (JLUSTIRT);'Double-First Class' Discipline for Materials Science & Engineering 摘　　要：MXene has shown distinctive advantages as anode materials of lithium-ion batteries. However, local surface chemistry, which was confirmed that can block ion transfer and limit redox reaction, has a significant effect on electrochemical performance. Herein, annealing MXene under hydrogen was employed for removing-F and turning-OH to-O terminations. We demonstrate that it improves the kinetics of Li-ion transport between the electrolyte and electrode. As a result, a lower interfacial charge transfer impedance was obtained. The electrochemical measurement exhibited that a nearly 2-fold increase of specific capacity was achieved for the annealed MXene. 关键词：Ti3C2 MXene LI-ION HYDROGEN -F content

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2D titanium carbide(MXene) electrodes with lower-F surface for high performance lithium-ion batteries

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