发明名称 |
Secondary battery |
摘要 |
A secondary battery having an excellent capacity maintenance factor or charging/discharging efficiency is provided. A lithium-ion battery comprises an electrode group that a positive electrode and a negative electrode which respective of active materials for the positive and negative electrodes is coated on both surfaces of a collecting member. An area S 1 of a portion of then egative electrode 7 not facing the positive electrode 6 is set to be not more than 10% of an area S 2 of a portion of the negative electrode 7 facing the positive electrode 6 . An influence that the portion not facing the positive electrode affects a battery reaction is controlled, and the decrease in the capacity maintenance factor or the charging/discharging efficiency according to cycling use can be depressed.
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申请公布号 |
US2007184338(A1) |
申请公布日期 |
2007.08.09 |
申请号 |
US20060528540 |
申请日期 |
2006.09.28 |
申请人 |
HITACHI VEHICLE ENERGY, LTD. |
发明人 |
KOJIMA TOORU;ISHIZU TAKENORI |
分类号 |
H01M4/02;H01M2/08;H01M4/50;H01M4/58 |
主分类号 |
H01M4/02 |
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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