发明名称 |
POSITIVE ELECTRODE MATERIAL AND BATTERY COMPRISING IT |
摘要 |
It is the object of the invention to provide a cathode material capable of improving charge-and-discharge cycle characteristics and a battery using the cathode material. A rolled electrode body (20) is provided, the rolled electrode body being comprised of a strip-shaped cathode (21) and a strip-shaped anode (22) with a separator (23) sandwiched in-between. Lithium metal precipitates on the anode (22) in the middle of charge, and a capacity of the anode (22) is expressed by a sum of a capacity component obtained through insertion and extraction of lithium and a capacity component obtained through precipitation and dissolution of lithium. The cathode (21) includes lithium-containing oxide as the cathode material capable of insertion and extraction of lithium, which is expressed in a chemical formula LixMI1-yMIIyO2. MI corresponds to Co or Ni, and MII corresponds to a transition metal element except for MI. Therefore, charge-and-discharge cycle characteristics can be improved. <IMAGE> |
申请公布号 |
EP1369940(A1) |
申请公布日期 |
2003.12.10 |
申请号 |
EP20020705175 |
申请日期 |
2002.03.14 |
申请人 |
SONY CORPORATION |
发明人 |
AKASHI, HIROYUKI;SHIBAMOTO, GOROU;ADACHI, MOMOE;FUJITA, SHIGERU |
分类号 |
C01G51/00;C01G53/00;H01M4/36;H01M4/38;H01M4/42;H01M4/44;H01M4/46;H01M4/525;H01M4/62;H01M6/10;H01M6/50;H01M10/05;H01M10/052 |
主分类号 |
C01G51/00 |
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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