期刊
ELECTROCHIMICA ACTA
卷 192, 期 -, 页码 346-356出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2016.01.225
关键词
KB-MnO coated separator; Li-S battery; lithium polysulfides
资金
- Start-up Fund of Jiangsu University [14JDG060, 14JDG058]
- Postdoctoral Fund of Jiangsu Province [1402196C]
- open fund of the Laboratory of Solid State Microstructures, Nanjing University [M28035]
- National Natural Science Foundation of China [51274106, 51474113, 51474037]
- Natural Science Foundation of Jiangsu Provincial Higher Education of China [12KJA430001]
A Ketjen Black-MnO composite was prepared by wet impregnation and TEM images showed that the MnO nanoparticles were well enwrapped by Ketjen Black (KB). The as-prepared KB-MnO composite were coated on one side of the commercial separators for the improvement of electrochemical performances of Lithium-Sulfur battery. For comparison, conventional separator coated by KB and conventional separator without coating was used in reference Lithium-Sulfur batteries. Electrochemical tests suggested that KB-MnO coated separator could act as the upper current collector and the barrier of lithium polisulfides which consequently achieved higher charge/discharge capacity and more stable cycling stability. Furthermore, TEM elemental map demonstrated that KB-MnO composite was more favorable for the adsorption of lithium polysulfides than KB, therefore the electrochemical performances of Li-S batteries can be dramatically enhanced. (C) 2016 Elsevier Ltd. All rights reserved.
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