Effect of Ti Doping on the Structure and Performance of LiNi_(0.75)Co_(0.25)O_(2)

Authors

Hui HE, ,WANG Shu-fen(Department of Chemistry,Department of Materials Science & Engineering,State Key Laboratory for Physical Chemistry of Solid Surfaces,Xiamen University,Xiamen 361005,Fujian,China;
Xuan CHENG, ,WANG Shu-fen(Department of Chemistry,Department of Materials Science & Engineering,State Key Laboratory for Physical Chemistry of Solid Surfaces,Xiamen University,Xiamen 361005,Fujian,China;
ZHANG Ying, ,WANG Shu-fen(Department of Chemistry,Department of Materials Science & Engineering,State Key Laboratory for Physical Chemistry of Solid Surfaces,Xiamen University,Xiamen 361005,Fujian,China;

Abstract

In this study,a series of Co-doped compounds with the formula of LiNi_((0.75-x))Co_(0.25)Ti_(x)O_(2)(x=0,(0.1),0.25)was synthesized by using sol-gel method.Their structure,particle size,electrochemical properties were studied by TG,XRD,SEM and electrochemical tests.It was shown that the structure of materials changed from a hexagonal layered structure to a cubic structure as the x value increased.In particular,a mixture of hexagonal and cubic structure was presented at x =0.25.The electrochemical performance of the materials depended strongly on the amount of Ti doping.Possible effects on the structure and performance of LiNi_((0.75-x))Co_(0.25)Ti_(x)O_(2) due to Ti doping are briefly discussed based upon the experiment and computational results.

Keywords

Lithium ion batteries, Cathode materials, Ti doping, Electrochemical performance

DOI Link

https://doi.org/10.61558/2993-074X.1730

Publication Date

2006-08-28

Online Available Date

2006-08-28

Revised Date

2006-08-28

Received Date

2006-08-28

Recommended Citation

Hui HE, Xuan CHENG, ZHANG Ying. Effect of Ti Doping on the Structure and Performance of LiNi_(0.75)Co_(0.25)O_(2)[J]. Journal of Electrochemistry, 2006 , 12(3): 243-249.
DOI: 10.61558/2993-074X.1730
Available at: https://jelectrochem.xmu.edu.cn/journal/vol12/iss3/2