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研究论文

锂离子电池中SnCu_x/CMS复合材料的制备

  • 刘宇 ,
  • 解晶莹 ,
  • 杨军 ,
  • 王可 ,
  • 王保峰
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  • 中科院上海微系统与信息技术研究所能源科学与技术室,中科院上海微系统与信息技术研究所能源科学与技术室,中科院上海微系统与信息技术研究所能源科学与技术室,中科院上海微系统与信息技术研究所能源科学与技术室,中科院上海微系统与信息技术研究所能源科学与技术室 上海200050 ,上海200050 ,上海200050 ,上海200050 ,上海200050

收稿日期: 2003-02-28

  修回日期: 2003-02-28

  网络出版日期: 2003-02-28

Fabrication of SnCu_x/CMS Composite Materials for Lithium-ion Batteries

  • LIU Yu ,
  • XIE Jing_ying ,
  • YANG Jun ,
  • WANG Ke ,
  • WANG Bao_feng
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  • (Energy Science and Technology Laboratory, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences,Shanghai 200050,China)

Received date: 2003-02-28

  Revised date: 2003-02-28

  Online published: 2003-02-28

摘要

将亚微米SnCux合金颗粒分布于中间相碳微球(CMS)载体表面构成的复合材料,电化学测试表明其制备的电极可逆比容量390mAhg-1,相对单纯CMS电极提高26%;第二次循环后电极充放电效率接近100%,循环30次后容量衰减率低于5%.复合材料的电化学性能受合金含量、合金颗粒与载体间的结合强度,合金颗粒在载体表面的分布均匀程度,以及合金颗粒尺寸等因素影响.该类复合材料可用作为锂离子电池中的负极.

本文引用格式

刘宇 , 解晶莹 , 杨军 , 王可 , 王保峰 . 锂离子电池中SnCu_x/CMS复合材料的制备[J]. 电化学, 2003 , 9(1) : 87 -92 . DOI: 10.61558/2993-074X.1490

Abstract

The composite material were prepared by sub_micro SnCux, particles depositing on the surface of Carbonaceous Mesophase Spherules(CMS).Electrochemical cycling tests showed that coulombic efficiency of the electrodes prepared by the composite materials was near 100 % after second cycle and the capacity dropped less than 5% after the 30th cycle, versus 390 mAhg-1 special capacity, improving 26 % special capacity of pure CMS electrode. The electrochemical performance of the composite materials is depended strongly on the alloy content in the composite, the addhesive strength between alloy particles and CMS matrix, the distribution of particles on the surface of CMS and the particle size of alloy. The composite material can be applied as the anode of lithium ion batteries.

参考文献

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