发明公开
EP2600457A1 LITHIUM ION SECONDARY BATTERY AND PROCESS FOR PRODUCTION THEREOF
有权
维多利亚ZU IHRER HERSTELLUNG的LITHIUMONENSEKUNDÄRBATTERIE
- 专利标题: LITHIUM ION SECONDARY BATTERY AND PROCESS FOR PRODUCTION THEREOF
- 专利标题(中): 维多利亚ZU IHRER HERSTELLUNG的LITHIUMONENSEKUNDÄRBATTERIE
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申请号: EP11812622.6申请日: 2011-07-29
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公开(公告)号: EP2600457A1公开(公告)日: 2013-06-05
- 发明人: KASAHARA, Ryuichi , IRIYAMA, Jiro , KAJITA, Tetsuya , TAKAHASHI, Hiroo , NUMATA, Tatsuji , KAWASAKI, Daisuke
- 申请人: NEC Corporation , NEC Energy Devices, Ltd.
- 申请人地址: 7-1, Shiba 5-chome Minato-ku Tokyo 108-8001 JP
- 专利权人: NEC Corporation,NEC Energy Devices, Ltd.
- 当前专利权人: NEC Corporation,NEC Energy Devices, Ltd.
- 当前专利权人地址: 7-1, Shiba 5-chome Minato-ku Tokyo 108-8001 JP
- 代理机构: Glawe, Delfs, Moll
- 优先权: JP2011047784 20110304; JP2010170760 20100729
- 国际公布: WO2012015033 20120202
- 主分类号: H01M10/052
- IPC分类号: H01M10/052 ; H01M4/134 ; H01M4/1395 ; H01M4/36 ; H01M4/62 ; H01M10/058
摘要:
In a lithium ion secondary battery including a positive electrode, a separator, a negative electrode, and a package body, the negative electrode includes simple substance silicon as a negative electrode active material, and a negative electrode binder, and is doped with lithium, and the following formulas (1) and (2) are satisfied: 1.2 ≤ M a / M c ≤ 1.9 1.0 M a / M c + M Li 1.6
wherein an amount of lithium inserted into the negative electrode until the negative electrode reaches a potential of 0.02 V with respect to metal lithium is M a (a number of atoms), an amount of lithium released from the positive electrode until the positive electrode reaches a potential of 4.3 V with respect to metal lithium is M c (a number of atoms), and an amount of lithium with which the negative electrode is doped is M Li (a number of atoms).
wherein an amount of lithium inserted into the negative electrode until the negative electrode reaches a potential of 0.02 V with respect to metal lithium is M a (a number of atoms), an amount of lithium released from the positive electrode until the positive electrode reaches a potential of 4.3 V with respect to metal lithium is M c (a number of atoms), and an amount of lithium with which the negative electrode is doped is M Li (a number of atoms).
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