发明申请
- 专利标题: CARBON MATERIAL FOR NEGATIVE ELECTRODE OF LITHIUM SECONDARY BATTERY AND METHOD FOR PRODUCING THE SAME
- 专利标题(中): 锂二次电池负极用碳材料及其制造方法
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申请号: US13422513申请日: 2012-03-16
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公开(公告)号: US20120171572A1公开(公告)日: 2012-07-05
- 发明人: Takashi SUZUKI , Akio SAKAMOTO , Tamotsu TANO , Kazuhisa NAKANISHI , Takashi OYAMA
- 申请人: Takashi SUZUKI , Akio SAKAMOTO , Tamotsu TANO , Kazuhisa NAKANISHI , Takashi OYAMA
- 专利权人: JX NIPPON OIL & ENERGY CORPORATION
- 当前专利权人: JX NIPPON OIL & ENERGY CORPORATION
- 优先权: JP2009-217842 20090918
- 主分类号: H01M4/583
- IPC分类号: H01M4/583 ; C01B31/00 ; H01M10/052
摘要:
To provide a negative electrode carbon material capable of suppressing capacity degradation which will occur due to repetition of a charge/discharge cycle, storage under a charged state, float charging, or the like. An artificial graphite for a negative electrode of a lithium secondary battery having a c-axis crystallite size L (112) of from 2.0 to 4.2 nm as calculated from a (112) diffraction line obtained by X-ray wide-angle diffractometry and having a half-value width ΔνG of from 15 to 19 cm−1 for a peak appearing in a wavelength region of from 1580 cm−1±100 cm−1 in the Raman spectroscopy using an argon ion laser light having a wavelength of 5145 angstrom.
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