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Conflict of Interest: In relation to this article, we declare that there is no conflict of interest.

Publication history: Received April 19, 2002
Accepted July 11, 2002

This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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The Effects of Oxygen Flow Rate and Anion Doping on the Performance of the LiNiO2 Electrode for Lithium Secondary Batteries

Sang Ho Park Ki Soo Park¹ Myung Hun Cho¹ Yang Kook Sun Kee Suk Nahm^1† Yun Sung Lee² Masaki Yoshio²

Department of Industrial Chemistry, College of Engineering, Hanyang University, Seoul 133-791, Korea ¹School of Chemical Engineering and Technology, College of Engineering, Chonbuk National University, Chonju 561-756, Korea ²Department of Applied Chemistry, Saga University, Honjo, Saga 840-8502, Japan

nahmks@moak.chonbuk.ac.kr

Korean Journal of Chemical Engineering, September 2002, 19(5), 791-796(6), 10.1007/BF02706969

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Abstract

This work presents the effects of O2 flow rate and S-doping on structural and electrochemical properties of LiNiO2. Layered LiNiO2 were prepared using a sol-gel method. It was found that oxygen plays an important role in the crystallization of layered LiNiO2. The deficiency of oxygen in the crystallization process induced the inclusions of impurities and cubic rock-salt structure in LiNiO2 powders. For LiNiO2 prepared at high O2 flow rates, the electrode delivered high initial discharge capacity with a relatively good retention rate. S-doped LiNiO2 not only stabilized the_x000D_ structural integrity of the electrode material, but also increased the electrode performance.

Keywords

Li Battery LiNiO2 Oxygen Effect Anion Doping Structural and Electrochemical Characterizations

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