标题
作者
作者:Li, X (Li, Xiang)[1 ]; Li, JH (Li, Junhao)[2 ]; Gao, QS (Gao, Qingsheng)[2 ]; Yu, X (Yu, Xiang)[2 ]; Hu, RZ (Hu, Renzong)[1 ]; Liu, J (Liu, Jun)[1 ]; Yang, LC (Yang, Lichun)[1 ]; Zhu, M (Zhu, Min)[1 ]
期刊信息
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文献类型:Article
摘要
MoS2 nanosheets with conformal carbon coating are achieved via a facile, chemical vapor deposition process, employing ethanol vapor as carbon source. The uniform carbon layers are semi-graphitized, which facilitate kinetics for electron and ion transfer, accommodate volume variation of MoS2, and relieve dissolution of polysulfide during repeated discharge/charge cycles. As anode materials for sodium-ion batteries, the optimized carbon coated MoS2 nanosheets show stable reversible capacity of 500 mAh g(-1) for 100 cycles at 0.1 Ag-1, and maintain 351.6 mAh g(-1) after 200 cycles even at 1 Ag-1. Furthermore, the enhanced electron transfer, and the stabilized structure are verified through electrochemical impedance spectroscopy, cyclic voltammetry, as well as scanning electron microscopy. Our results show that the carbon coating by chemical vapor deposition is efficient and promising to improve the reversible Na+ storage performance of anode materials. (C) 2017 Elsevier Ltd. All rights reserved.
关键词
作者关键词:carbon coating; cycle stability; anode; MoS2; sodium-ion battery
作者信息
通讯作者地址:Yang, LC (通讯作者)
 | South China Univ Technol, Guangdong Prov Key Lab Adv Energy Storage Mat, Sch Mat Sci & Engn, Guangzhou 510641, Guangdong, Peoples R China. |
地址:
电子邮件地址:mslcyang@scut.edu.cn
出版商
类别分类
研究方向:Electrochemistry
Web of Science 类别:Electrochemistry