Comparative study of LiNiO2, LiNi0.8Co0.2O2 and LiNi0.75Al0.25O2 for lithium-ion batteries

Chuangang Lin; Weihua Qiu; Zhimin Li; Jialing Hong; Huanyu Hu; Zhongqin Lu

Volume 9 Issue 6

Dec. 2002

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Article Navigation > International Journal of Minerals, Metallurgy and Materials > 2002 > 9(6): 448-452

Chuangang Lin, Weihua Qiu, Zhimin Li, Jialing Hong, Huanyu Hu, and Zhongqin Lu, Comparative study of LiNiO₂, LiNi_0.8Co_0.2O₂ and LiNi_0.75Al_0.25O₂ for lithium-ion batteries, J. Univ. Sci. Technol. Beijing, 9(2002), No. 6, pp. 448-452.

Cite this article as:

Chuangang Lin, Weihua Qiu, Zhimin Li, Jialing Hong, Huanyu Hu, and Zhongqin Lu, Comparative study of LiNiO2, LiNi0.8Co0.2O2 and LiNi0.75Al0.25O2 for lithium-ion batteries, J. Univ. Sci. Technol. Beijing, 9(2002), No. 6, pp. 448-452.

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Materials

Comparative study of LiNiO₂, LiNi_0.8Co_0.2O₂ and LiNi_0.75Al_0.25O₂ for lithium-ion batteries

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Corresponding author:
Weihua Qiu E-mail: qiuwh@public.fhnet.cn.net
Received: 22 January 2002

Abstract

Abstract

The comparative study of LiNi_0.8Co_0.2O₂ and LiNi_0.75Al_0.25O₂ was carried out by X-ray diffraction (XRD) and electrochemical methods. The results show that Co and Al doping suppress the phase transition during charge-discharge. The experiments indicate that LiNi_0.75Al_0.25O₂ has the better cycle-ability and over-charge resistance comparing with LiNi_0.8Co_0.2O₂. The interfacial behavior was studied by use of electrochemical impedance spectroscopy (EIS). The results show that LiNi_0.75Al_0.25O₂ has a slightly larger polarization character than LiNi_0.8Co_0.2O₂.
- lithium-ion batteries;
- lithium nickel oxide;
- cathod materials