发明申请
- 专利标题: Non-aqueous electrolyte secondary battery and negative electrode for the same
- 专利标题(中): 非水电解质二次电池和负电极相同
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申请号: US10943839申请日: 2004-09-20
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公开(公告)号: US20050031955A1公开(公告)日: 2005-02-10
- 发明人: Kohei Suzuki , Kazunori Kubota , Motoi Kawamura , Akira Kuroda , Masao Fukunaga , Tsumoru Ohata
- 申请人: Kohei Suzuki , Kazunori Kubota , Motoi Kawamura , Akira Kuroda , Masao Fukunaga , Tsumoru Ohata
- 申请人地址: JP Osaka
- 专利权人: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD
- 当前专利权人: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD
- 当前专利权人地址: JP Osaka
- 优先权: JP2000-267626 20000904; JP2000-267627 20000904
- 主分类号: H01M4/02
- IPC分类号: H01M4/02 ; H01M4/131 ; H01M4/133 ; H01M4/52 ; H01M4/525 ; H01M4/58 ; H01M4/587 ; H01M4/62 ; H01M10/04 ; H01M10/0525 ; H01M10/0568 ; H01M10/0587 ; H01M10/36 ; H01M4/48
摘要:
A non-aqueous electrolyte battery is provided, which exhibits good high-rate discharge characteristics and low-temperature characteristics and ensures high safety when the negative electrode contains 0.6 to 1.7 parts by weight of a particulate modified styrene-butadiene rubber as a binder and 0.7 to 1.2 parts by weight of a thickening agent so that the total amount of the binder and thickening agent is 1.3 to 2.4 parts by weight per 100 parts by weight of a carbon material as an active material, and the concentration of LiPF6 in the non-aqueous electrolyte is 0.6 to 1.05 mole/liter. The surface area of the active material effectively contributable to charging and discharging reaction is sufficient when the surface area of the carbon material per 1 g of the binder contained in the negative electrode is 300 to 600 m2.