Oligolayered Ti3C2Tx MXene towards high performance lithium/sodium storage  

作　　者：Xiaolan Song Hui Wang Shengming Jin Miao Lv Ying Zhang Xiaodong Kong Hongmei Xu Ting Ma Xinyuan Luo Hengfeng Tan Dong Hu Chaoyong Deng Xinghua Chang Jianlong Xu 

机构地区：[1]Hunan Key Lab of Mineral Materials and Application,School of Minerals Processing and Bioengineering,Central South University,Changsha,410083,China [2]Guangdong Zhiyuan New Material Co.,LTD,Qingyuan,513055,China [3]Institute of Functional Nano&Soft Materials(FUNSOM),Jiangsu Key Laboratory for Carbon-Based Functional Materials&Devices,Soochow University,Suzhou,215123,China

出　　处：《Nano Research》2020年第6期1659-1667,共9页纳米研究（英文版）

基　　金：This work was supported by Science Research Initiation Fund of Central South University(No.202045012);Key Research and Development Program of Jiangxi Province(No.20181ACE50013);Fundamental Research Funds for the Central Universities of Central South University(No.2019zzts708);the National Natural Science Foundation of China(No.61705152).

摘　　要：Nano Research volume 13,pages1659–1667(2020)Cite this article 232 Accesses 3 Citations Metrics details Abstract 2D MXenes are highly attractive for achieving ultrafast and stable lithium/sodium storage due to their good electric conductivity and abundant redox active sites.While,effective strategies for scalable preparation of oligolayered MXenes are still under exploration.Herein,oligolayered Ti3C2Tx MXene is successfully obtained after conventional synthesis of multilayered Ti3C2 and subsequent delamination process via an organic solvent of tetramethyl-ammonium hydroxide(TMAOH).Comprehensive electrochemical study reveals that surface-controlled redox reaction dominated the charge storage behavior of oligolayered Ti3C2Tx with fast reaction kinetics.Impressively,the obtained oligolayered Ti3C2Tx exhibits excellent lithium/sodium storage performance,featured for a high specific capacity of 330 mAhg^−1 at 1.0 Ag^−1 after 800 cycles for lithium storage and 280 mAhg^−1 at 0.5 Ag^−1 after 500 cycles for sodium storage.Such impressive performance will advance the development of oligolayered Ti3C2Tx based materials for lithium/sodium storage and even broaden their application into energy storage.

关 键 词：oligolayered Ti3C2Tx MXene DELAMINATION lithium ion battery sodium ion battery pseudocapacitance contribution 

分 类 号：O62[理学—有机化学]