Synthesis and Electrochemical Properties of High-Capacity Cathode Material 0.08LiCo_0.75Al_0.25O₂-0.92LiNiO₂

Authors

Ru-Ying WANG
Tian QIU
Chong MAO
Wen-Sheng YANG

Corresponding Author

Wen-Sheng YANG

Abstract

CoAl-LDH or Co(OH)₂ coated spherical Ni(OH)₂ precursors were obtained via a co-precipitation method at a constant pH. The mixtures of the precursors and LiOH.H₂O were annealed at high temperature in O₂ atmosphere, and then the cathode materials of 0.08LiCo_0.75Al_0.25O₂-0.92LiNiO₂, 0.08LiCoO₂-0.92LiNiO₂ and LiNiO₂ were synthesized. Effects of the coating layer were also studied. The results showed that the 0.08LiCo_0.75Al_0.25O₂-0.92LiNiO₂ material possessed the best rate and cycle life performance. The discharging capacities at 0.1C, 0.5C and 3C were 211 mAh.g^-1, 195.6 mAh.g^-1 and 161 mAh.g^-1, respectively, and the capacity retention ratio after 30 cycles at 0.5C was 93.2 %. These performances were much better than those of both pure LiNiO₂ and 0.08LiCoO₂-0.92LiNiO₂.

Graphical Abstract

Keywords

Li-ion battery, cathode material, LiNiO2, LiCo0.75Al0.25O2, coating

DOI Link

https://doi.org/10.61558/2993-074X.2927

Publication Date

2012-08-28

Online Available Date

2012-02-17

Revised Date

2012-02-12

Received Date

2011-11-24

Recommended Citation

Ru-Ying WANG, Tian QIU, Chong MAO, Wen-Sheng YANG. Synthesis and Electrochemical Properties of High-Capacity Cathode Material 0.08LiCo_0.75Al_0.25O₂-0.92LiNiO₂[J]. Journal of Electrochemistry, 2012 , 18(4): Article 10.
DOI: 10.61558/2993-074X.2927
Available at: https://jelectrochem.xmu.edu.cn/journal/vol18/iss4/10

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