期刊
ELECTROCHIMICA ACTA
卷 176, 期 -, 页码 1296-1301出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2015.07.140
关键词
Sodium-ion batteries; Lithium-ion batteries; Anode materials; Tin selenide
资金
- Fundamental Research Funds for the Central Universities of Central South University
- Teacher Research Fund of Central South University [2013JSJJ027]
- State Key Laboratory of Powder Metallurgy, Central South University, Changsha, China
A homogeneous nanocomposite of SnSe and carbon black, denoted as SnSe/C nanocomposite, was fabricated by high energy ball milling and empolyed as a high performance anode material for both sodium-ion batteries and lithium-ion batteries. The X-ray diffraction patterns, scanning electron microscopy and transmission electron microscopy observations confirmed that SnSe in SnSe/C nanocomposite was homogeneously distributed within carbon black. The nanocomposite anode exhibited enhanced electrochemical performances including a high capacity, long cycling behavior and good rate performance in both sodium-ion batteries (SIBs) and lithium-ion batteries (LIBs). In SIBs, an initial capacitiy of 748.5 mAh g(-1) was obtained and was maintained well on cycling (324.9 mAh g(-1) at a high current density of 500 mA g(-1) in the 200 th cycle) with 72.5% retention of second cycle capacity (447.7 mAh g(-1)). In LIBs, high initial capacities of approximately 1097.6 mAh g(-1) was obtained, and this reduced to 633.1 mAh g(-1) after 100 cycles at 500 mA g(-1). (C) 2015 Elsevier Ltd. All rights reserved.
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