Carbon-coated MoS_(2) nanosheets@CNTs-Ti_(3)C_(2) MXene quaternary composite with the superior rate performance for sodium-ion batteries

作     者：Fengyi He Cheng Tang Yadong Liu Haitao Li Aijun Du Haijiao Zhang Fengyi He;Cheng Tang;Yadong Liu;Haitao Li;Aijun Du;Haijiao Zhang

作者机构：Institute of Nanochemistry and NanobiologyShanghai UniversityShanghai 200444China School of ChemistryPhysics and Mechanical EngineeringScience and Engineering FacultyQueensland University of TechnologyBrisbaneQLD 4001Australia 

出 版 物：《Journal of Materials Science & Technology》 (材料科学技术（英文版）)

年 卷 期：2022年第100卷第5期

页      面：101-109页

核心收录：

学科分类：0808[工学-电气工程] 08[工学] 0817[工学-化学工程与技术] 0806[工学-冶金工程] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 0802[工学-机械工程] 0801[工学-力学（可授工学、理学学位）] 0702[理学-物理学] 

基　　金：supported by the Shuguang Program from Shanghai Education Development Foundation and Shanghai Municipal Education Commission(18SG035) State Key Laboratory for Modification of Chemical Fibers and Polymer Materials,Donghua University(KF2015)。 

主　　题：MoS_(2)nanosheets Ti_(3)C_(2)MXene Quaternary composite Nitrogen doping Sodium-ion batteries 

摘      要：The exploration of advanced MoS_(2)-based electrode materials overcoming their inherent low conductivity and large volume changes is of importance for next-generation energy storage.In this work,we report a simple and high-efficient one-pot hydrothermal approach to prepare a unique and stable 1D/2D heterostructure.In the architecture,ultrathin carbon layer-coated MoS_(2) nanosheets with large expanded interlayer of 1.02 nm are vertically grown onto the Ti_(3)C_(2) MXene and cross-linked carbon nanotubes(CNTs),giving rise to a highly conductive 3D network.The interlayer expanded MoS_(2) nanosheets can greatly facilitate the Na ions/electrons transmission.Meanwhile,the N-doped 1D/2D CNTs-Ti_(3)C_(2) matrix can be used as a strong mechanical support to well relieve the large volume expansion upon cycles.As a combination result of several advantages,the developed quaternary C-MoS_(2)/CNTs-Ti_(3)C_(2) composite anode shows an excellent sodium storage performance(562 mA h g^(-1) at 100 mA g^(-1) after 200 cycles)and rate capability(475 mA h g^(-1) at 2000 mA g^(-1)).The density functional theory calculations further prove that the full combination of layer-expanded MoS_(2) nanosheets and N-doped Ti_(3)C_(2) matrix can significantly enhance the adsorption energy of Na ions,further resulting in the enhancement of sodium storage capabilities.