发明授权
- 专利标题： Nonaqueous secondary battery, method for making negative electrode component therefor, and apparatus for evaluating and making graphite material for negative electrode component
- 专利标题（中）： 非水系二次电池，其负极成分的制造方法，负极成分用石墨材料的评价制造装置
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申请号： US09514590申请日： 2000-02-28
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公开(公告)号： US06506519B1公开(公告)日： 2003-01-14
- 发明人: Kotaro Satori , Akinori Kita , Atsuo Omaru
- 申请人： Kotaro Satori , Akinori Kita , Atsuo Omaru
- 优先权： JP11-054459 19990302
- 主分类号： H01M458
- IPC分类号： H01M458
摘要：
A negative electrode of a nonaqueous secondary battery is formed of a carbonaceous material. The ratio RG=Gs/Gb of the degree of graphitization Gs of the carbonaceous material, determined by a surface-enhanced Raman spectrum, to the degree of graphitization Gb, determined by a Raman spectrum measured using argon laser light, is at least 4.5. Alternatively, the carbonaceous material has a peak in a wavelength range above 1,360 cm−1 in a surface-enhanced Raman spectrum which is measured by the same surface-enhanced Raman spectrum. The deterioration of the nonaqueous secondary battery is suppressed during use in high-temperature environments and high capacity is maintained for long periods.
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