CO2对锂电池正极三元材料的影响.pdf

Journal of Power Sources 166 (2007) 233–238 Short communication Effect of CO2 on layered Li1+zNi Co M O (M = Al, Mn) 1−x −y x y 2 cathode materials for lithium ion batteries Kenji Shizuka a,∗, Chikara Kiyoharab , Kouji Shima c , Yasuo Takeda d a Battery Materials Laboratory, Research and Development Division, Mitsubishi Chemical Group Science and Technology Research Center Inc., 8-3-1, Chuo, Ami, Inashiki, Ibaraki 300-0332, Japan b Mitsubishi Chemical Group Science and Technology Research Center Inc., 1000, Kamoshida-cho, Aoba-ku, Yokohama 227-8502, Japan c Mitsubishi Chemical Corporation, 1, Bannosu-cho, Sakaide, Kagawa 762-8510, Japan d Department of Chemistry Faculty of Engineering, Mie University, Yamachi, Kurima-Cho, Tsu, Mie 514-8507, Japan Received 1 August 2006; received in revised form 27 December 2006; accepted 4 January 2007 Available online 16 January 2007 Abstract We investigated the effect of CO on layered Li Ni Co M O (M = Al, Mn) cathode materials for lithium ion batteries which were 2 1+z 1−x −y x y 2 prepared by solid-state reactions. Li Ni Co Mn O (Ni/Mn mole ratio = 1) singularly exhibited high storage stability. On the other hand, 1+z (1−x)/2 x (1−x)