화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Korean Journal of Chemical Engineering, Vol.19, No.5, 791-796, September, 2002
DOI10.1007/BF02706969  Export Citation
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 Nahm1, †, Yun Sung Lee2, and 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
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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 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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