分离器(采油)
电化学
化学工程
涂层
材料科学
复合数
锂硫电池
吸附
电极
化学
硫黄
复合材料
冶金
有机化学
物理
工程类
物理化学
热力学
作者
Xinye Qian,Lina Jin,Di Zhao,Xiaolong Yang,Shanwen Wang,Xiangqian Shen,Dewei Rao,Shanshan Yao,Yong Zhou,Xiaoming Xi
标识
DOI:10.1016/j.electacta.2016.01.225
摘要
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.
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