LITHIUM HYDROGENTITANATES AND PROCESS FOR THE PREPARATION THEREOF
摘要
Lithium hydrogentitanates prepared by acid treatment of lithium titanate and having pH values of 11.2 or below; and those represented by the general formula: HxLiy-xTizO4 (wherein y>/=x> 0, 0.8</=y</=2.7 and 1.3</=z</=2.2). These lithium hydrogentitanates are useful as active materials of positive and negative electrodes for secondary batteries of nonaqueous electrolyte type, and can realize a charging capacity exceeding the theoretical one. The lithium hydrogentitanates take the form of particles which preferably contain voids and preferably have a maximum particle diameter of 0.1 to 50 nu m and a specific surface area of 0.01 to 300 m<2>/g. The lithium hydrogentitanates can be prepared by bringing lithium titanate into contact with an acid such as acetic acid to replace some of the lithium ions by protons.
申请公布号
WO9903784(A1)
申请公布日期
1999.01.28
申请号
WO1998JP03184
申请日期
1998.07.15
申请人
SONY CORPORATION;ISHIHARA SANGYO KAISHA, LTD.;ATSUMI, YOSHINORI;NAGAMINE, MASAYUKI;KOGA, HIROMI;SUITA, TOKUO
