3D Metal-Rich Cu7.2S4/Carbon-Supported MoS2 Nanosheets for Enhanced Lithium-Storage Performance

被引：11

作者：

Liu, Zhimin ^{[1
]}

Qi, Shaopeng ^{[1
]}

Liu, Guoning ^{[1
]}

Cheng, Lin ^{[1
]}

Chen, Jinxi ^{[1
]}

Lou, Yongbing ^{[1
]}

机构：

[1] Southeast Univ, Sch Chem & Chem Engn, Jiangsu Key Lab Sci & Applicat Mol Ferroelect, Jiangsu Engn Lab Smart Carbon Rich Mat & Device, Nanjing 211189, Jiangsu, Peoples R China

来源：

CHEMELECTROCHEM | 2019年 / 6卷 / 05期

基金：

中国国家自然科学基金;

关键词：

anode materials; core-shell structures; lithium-ion batteries; nanocomposites; power sources; REDUCED GRAPHENE OXIDE; IN-SITU; ANODE MATERIALS; ION; COMPOSITES; SPHERES; ELECTRODE; SODIUM; NANOSTRUCTURES; NANOPARTICLES;

D O I：

10.1002/celc.201801561

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

MoS2 exhibits a high theoretical capacity and has been widely studied as an anode candidate for high-performance lithium-ion batteries (LIBs). However, unmodified MoS2 suffers from inherently poor conductivity and poor cycle stability because of the lamellar stack. Herein, a novel core-shell nanocomposite material (Cu7.2S4/C@MoS2) was obtained to significantly improve the electrochemical performance of MoS2, where ultra-thin MoS2 nanosheets were uniformly grown on a three-dimensional (3D) metal-rich Cu7.2S4/C support by a simple hydrothermal reaction. When employed as an anode for LIBs, the discharge capacity of the 3D core-shell Cu7.2S4/C@MoS2 nanocomposite reached 1527.4 mAh g(-1) after 340 cycles at a high current density of 1 A g(-1), which is much higher than that of pure MoS2 nanosheets. The excellent electrochemical performance of the nanocomposite demonstrates its potential application in batteries.

引用

页码：1458 / 1465

页数：8

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