期刊
RSC ADVANCES
卷 4, 期 18, 页码 9086-9091出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c3ra48034h
关键词
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资金
- International Science & Technology Cooperation Program of China [2010DFA61770]
- NSFC [21073046]
- STCSM [12JC1401200]
A Se/C composite was prepared by a simple combination method of ball milling and low temperature treatment as a cathode material for Li-Se rechargeable batteries. It was characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). Its electrochemical performance as a cathode material for lithium rechargeable batteries was tested by cyclic voltammetry (CV) and capacity measurements. Rate capacity and cycling performance of the as-prepared product are very satisfactory. Even at a current density of 500 mA g(-1), the composite can deliver a capacity of 187 mA h g(-1). The main reason is that the high conductivity of carbon decreases its charge transfer resistance and effectively suppresses the dissolution of oxidation products from the composite cathode.
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