Premium
3D Metal‐Rich Cu 7.2 S 4 /Carbon‐Supported MoS 2 Nanosheets for Enhanced Lithium‐Storage Performance
Author(s) -
Liu Zhimin,
Qi Shaopeng,
Liu Guoning,
Cheng Lin,
Chen Jinxi,
Lou Yongbing
Publication year - 2019
Publication title -
chemelectrochem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.182
H-Index - 59
ISSN - 2196-0216
DOI - 10.1002/celc.201801561
Subject(s) - materials science , anode , nanocomposite , electrochemistry , lithium (medication) , lamellar structure , chemical engineering , carbon fibers , metal , faraday efficiency , nanotechnology , electrode , composite material , metallurgy , composite number , chemistry , medicine , endocrinology , engineering
MoS 2 exhibits a high theoretical capacity and has been widely studied as an anode candidate for high‐performance lithium‐ion batteries (LIBs). However, unmodified MoS 2 suffers from inherently poor conductivity and poor cycle stability because of the lamellar stack. Herein, a novel core‐shell nanocomposite material (Cu 7.2 S 4 /C@MoS 2 ) was obtained to significantly improve the electrochemical performance of MoS 2 , where ultra‐thin MoS 2 nanosheets were uniformly grown on a three‐dimensional (3D) metal‐rich Cu 7.2 S 4 /C support by a simple hydrothermal reaction. When employed as an anode for LIBs, the discharge capacity of the 3D core‐shell Cu 7.2 S 4 /C@MoS 2 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 MoS 2 nanosheets. The excellent electrochemical performance of the nanocomposite demonstrates its potential application in batteries.