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首页> 外文期刊>Journal of power sources >Lithium-active molybdenum trioxide coated LiNi_(0.5)Co_(0.2)Mn_(0.3)O_2 cathode material with enhanced electrochemical properties for lithium-ion batteries
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Lithium-active molybdenum trioxide coated LiNi_(0.5)Co_(0.2)Mn_(0.3)O_2 cathode material with enhanced electrochemical properties for lithium-ion batteries

机译:具有增强的电化学性能的锂离子电池用活性锂三氧化钼包覆的LiNi_(0.5)Co_(0.2)Mn_(0.3)O_2正极材料

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摘要

LiNi_(0.5)Co_(0.2Mn_(0.3)O_2 cathode material was coated with MoO_3 via a wet coating process. X-ray diffraction patterns show that the coating surface is composed of MoO_3 and Li_2MoO_4. The 3 wt% MoO_3 coated LiNi_(0.5)Co_(0.2)Mn_(0.3)O_2 cathode (Li_2MoO_4 is treated as equivalent mole of MoO_3) exhibits the best improved cycling performance. It performs a capacity retention of 90.9% after 100 cycles while that of the pristine material is only 82.8%. After being coated by 3 wt.% MoO_3, the rate performance is also greatly enhanced and the charge transfer resistance is greatly decreased. The improvement of electrochemical performance is related to the fact that the coating layer diminishes the side reactions between the cathode and the electrolyte.
机译:正极材料LiNi_(0.5)Co_(0.2Mn_(0.3)O_2通过湿法涂覆MoO_3涂层,X射线衍射图表明涂层表面由MoO_3和Li_2MoO_4组成,其中3wt%的MoO_3涂覆LiNi_(0.5 )Co_(0.2)Mn_(0.3)O_2阴极(Li_2MoO_4被当做MoO_3的当量摩尔)表现出最佳的循环性能,在100次循环后其容量保持率为90.9%,而原始材料的容量保持率仅为82.8%。涂覆3 wt。%MoO_3后,速率性能也大大提高,电荷转移阻力大大降低,电化学性能的提高与涂层减少了阴极与电解质之间的副反应有关。 。

著录项

  • 来源
    《Journal of power sources》 |2014年第10期|747-754|共8页
  • 作者单位

    School of Chemical Engineering and Environment, Beijing Institute of Technology, Beijing Key Laboratory of Environmental Science and Engineering, Beijing 100081, China,National Development Center of High Technology Green Materials, Beijing 100081, China;

    School of Chemical Engineering and Environment, Beijing Institute of Technology, Beijing Key Laboratory of Environmental Science and Engineering, Beijing 100081, China;

    School of Chemical Engineering and Environment, Beijing Institute of Technology, Beijing Key Laboratory of Environmental Science and Engineering, Beijing 100081, China,National Development Center of High Technology Green Materials, Beijing 100081, China;

    China Electric Power Research Institute, Beijing 100192, China;

    China Electric Power Research Institute, Beijing 100192, China;

    School of Chemical Engineering and Environment, Beijing Institute of Technology, Beijing Key Laboratory of Environmental Science and Engineering, Beijing 100081, China;

    School of Chemical Engineering and Environment, Beijing Institute of Technology, Beijing Key Laboratory of Environmental Science and Engineering, Beijing 100081, China;

    School of Chemical Engineering and Environment, Beijing Institute of Technology, Beijing Key Laboratory of Environmental Science and Engineering, Beijing 100081, China,National Development Center of High Technology Green Materials, Beijing 100081, China;

    School of Chemical Engineering and Environment, Beijing Institute of Technology, Beijing Key Laboratory of Environmental Science and Engineering, Beijing 100081, China,National Development Center of High Technology Green Materials, Beijing 100081, China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Lithium-ion batteries; Cathode material; Coating; Electrochemical properties;

    机译:锂离子电池;阴极材料;涂层;电化学性质;

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