发明名称 |
LITHIUM HYDROGENTITANATES AND PROCESS FOR THE PREPARATION THEREOF |
摘要 |
Hydrogen lithium titanate prepared by an acid process of lithium titanate and having pH of 11.2 or smaller or hydrogen lithium titanate expressed by general formula HxLiy-xTizO4 (where y ≥ x > 0, 0.8 ≤ y ≤ 2.7 and 1.3 ≤ z ≤ 2.2) is disclosed. Hydrogen lithium titanate may be employed as active materials of positive and negative electrodes of a non-aqueous electrolyte secondary battery thereby realizing a charging capacity greater than a theoretical capacity. It is preferable that hydrogen lithium titanate is formed into a particle shape and includes voids in the particles. It is preferable that the largest particle size is 0.1 mu m to 50 mu m and the specific surface area is 0.01 m<2>/g to 300 m<2>/g. Lithium titanate of the foregoing type can be manufactured by bringing lithium titanate into contact with an acid such as acetic acid to substitute protons for lithium ions. <IMAGE> |
申请公布号 |
EP0937684(B1) |
申请公布日期 |
2011.05.04 |
申请号 |
EP19980932536 |
申请日期 |
1998.07.15 |
申请人 |
SONY CORPORATION;ISHIHARA SANGYO KAISHA, LTD. |
发明人 |
ATSUMI, YOSHINORI;NAGAMINE, MASAYUKI;KOGA, HIROMI;SUITA, TOKUO |
分类号 |
C01G23/00;H01M4/485;H01M4/58;H01M10/05;H01M10/052;H01M10/0525;H01M10/0566 |
主分类号 |
C01G23/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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