Studies of the LiAl_yNi_(1-y)O_2 as Cathode Materials for Rechargeable Lithium Ion Batteries

Authors

Xiao-gan LI, Dept. of Chem., State Key Lab. for Phys. Chem. of Sol. Surf. and Inst. of Phys. Chem., Xiamen Univ., Xiamen 361005, China;
Wei-hua QIU, Lab. for Solid State Ionics, Material Sci. Coll. of Univ. of Sci. & Techn., Beijing 100083, China;
Chuan-gang LIN, Lab. for Solid State Ionics, Material Sci. Coll. of Univ. of Sci. & Techn., Beijing 100083, China;
Qing-guo LIU, Lab. for Solid State Ionics, Material Sci. Coll. of Univ. of Sci. & Techn., Beijing 100083, China;

Corresponding Author

Wei_hua QIU

Abstract

In this paper, we have synthesized series of single_phase LiAl yNi 1-y O 2 (differentive in value_y) by solid reaction. Through examining their electrothemical properties, found that, under a proper sintering condition, Li xAl 0.25 Ni 0.75 O 2 solution for cathode materials of rechargeable lithium ion batteries showed more pleasing properties in overcharge_resist and cycling life ( vs LiNiO 2). When x>1, the capacity can be kept 125mAh/g after 30 cycles under higher charged/discharged voltages ranging from 3.0 V to 4.8 V, whereas that of pure LiNiO 2 has only 61 nAh/g after 25 cycles. The results of CV for LiAl yNi 1-y O 2 and pure LiNiO 2 showed that this may be due to the Al 3+ doping and by preventing Li + from overcharging, Al 3+ conbined with Li + obviated the phase transmission during charged/discharged progress.

Keywords

Cathode material for lithium ion batteries, LiAl yNi 1-y O 2 solutions, CV experiment

DOI Link

https://doi.org/10.61558/2993-074X.1398

Publication Date

2000-08-28

Online Available Date

2000-08-28

Revised Date

2000-08-28

Received Date

2000-08-28

Recommended Citation

Xiao-gan LI, Wei-hua QIU, Chuan-gang LIN, Qing-guo LIU. Studies of the LiAl_yNi_(1-y)O_2 as Cathode Materials for Rechargeable Lithium Ion Batteries[J]. Journal of Electrochemistry, 2000 , 6(3): 357-357.
DOI: 10.61558/2993-074X.1398
Available at: https://jelectrochem.xmu.edu.cn/journal/vol6/iss3/13

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