Chem. J. Chinese Universities ›› 2018, Vol. 39 ›› Issue (1): 141.doi: 10.7503/cjcu20170215

• Physical Chemistry • Previous Articles     Next Articles

Preparation and Electrochemical Performance of LiNi1/3Co1/3Mn1/3O2@C Composite

WANG Kun2, HUANG Mengyi1, ZHANG Xiaosong1, HUANG Junjie1,*(), DENG Xiang2, LIU Changlu2   

  1. 1. College of Chemistry & Chemical Engineering, Shaoxing University, Shaoxing 312000, China
    2. College of Chemistry & Chemical Engineering, Sichuan University of Art and Science, Dazhou 635000, China
  • Received:2017-04-11 Online:2018-01-10 Published:2017-12-21
  • Contact: HUANG Junjie E-mail:hjj@usx.edu.cn
  • Supported by:
    † Supported by the Zhejiang Provincial Key Research Project, China(No.2015C01002), the Foundation of the Science Technology Bureau of Shaoxing, China(No.2014B70016) and the Research Project of Sichuan University of Art and Science, China(No.2016KZ002Y)

Abstract:

Carbon coated LiNi1/3Co1/3Mn1/3O2(NCM@C) was prepared by active carbon to adsorb the mixed solution of acetate salts of Co2+, Mn2+, Ni2+ and Li+. Transmission electron microscopy(TEM) image shows that the surfaces of LiNi1/3Co1/3Mn1/3O2 particles are homogeneously coated by carbon with a thickness about 10 nm. The initial discharge capacity of NCM@C is 181 mA·h/g at 0.2C, and its initial Columbic efficiency is 90.7%. Meanwhile, the discharge capacity of NCM@C is 78 mA·h/g at 20C, while it is only 39 mA·h/g for LiNi1/3Co1/3Mn1/3O2(NCM) that prepared by a co-precipitation method. NCM@C also shows good cycling stability, the capacity retention is 88.1% after 50 cycles at 0.2C, while it is only 66.4% for NCM.

Key words: LiNi1/3Co1/3Mn1/3O2, Carbon coating, Cathode material, Lithium ion battery, Electrochemical performance

CLC Number: 

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