期刊
JOURNAL OF ALLOYS AND COMPOUNDS
卷 676, 期 -, 页码 551-556出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2016.03.132
关键词
Hybrid structure; Solvothermal; CoS; CNTs; Lithium ion battery
资金
- NNSF of China [21275119, 51473136, 21575116]
- China Postdoctoral Science Foundation [2015M572427]
- Fundamental Research Funds for the Central Universities, China [XDJK2015C099, SWU114079]
Cobalt sulfide (CoS) has a high theoretical capacity as an anode materials for lithium ion batteries (LIBs), however it suffers from poor cyclability and weak retention. Therefore, a lot of efforts have been devoted to overcome these defects. In this work, cobalt sulfide/carbon nanotubes (CoS/CNTs) nanocomposites were prepared by a simple and effective solvothermal method. The nanocomposites were constructed by CoS nanoparticles coated on the carbon nanotubes and the electrochemical performances of the CoS/CNTs nanocomposites were investigated as anode materials for LIBs. The results showed that the materials had superior cycle stability and kept a high discharge capacity of 780 mAh v after 50 cycles at the current density of 100 mA g(-1). The excellent electrochemical performances are due to the good combination of the hybrid structure and better electron transportation originated from CNTs. The CoS/CNTs nanocomposites with excellent rate capabilities and super capabilities could be promising anode material for lithium ion battery. (C) 2016 Elsevier B.V. All rights reserved.
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