发明申请
- 专利标题: NONAQUEOUS ELECTROLYTE SECONDARY BATTERY
- 专利标题(中): 非电解电解质二次电池
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申请号: US12035808申请日: 2008-02-22
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公开(公告)号: US20080206652A1公开(公告)日: 2008-08-28
- 发明人: Takeshi ABE , Masato IWANAGA
- 申请人: Takeshi ABE , Masato IWANAGA
- 申请人地址: JP Osaka
- 专利权人: SANYO ELECTRIC CO., LTD.
- 当前专利权人: SANYO ELECTRIC CO., LTD.
- 当前专利权人地址: JP Osaka
- 优先权: JP2007-044310 20070223
- 主分类号: H01M6/16
- IPC分类号: H01M6/16
摘要:
A nonaqueous electrolyte secondary battery 10 according to an embodiment of the invention includes a positive electrode 11, a negative electrode 12, a separator 13 and a nonaqueous electrolyte liquid in which not only the positive electrode 11 contains a positive electrode active material charged at or higher than 4.3 V based on lithium and a halogenated cyclic carbonate is added in the nonaqueous electrolyte liquid, but also an inorganic insulating material particle layer is formed on the surface of at least either of the positive electrode 11, the negative electrode 12 and the separator 13. By employing such a constitution in the present invention, a nonaqueous electrolyte secondary battery using a positive electrode charged at a high electric potential of 4.3 V or more based on lithium in which the amount of a generated gas is small even when the battery is overcharged at higher temperatures, and the impact safety and reliability thereof are high, can be provided.
公开/授权文献
- US07745057B2 Nonaqueous electrolyte secondary battery 公开/授权日:2010-06-29
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