发明名称 |
CARBON MATERIAL FOR NEGATIVE ELECTRODE FOR LITHIUM ION RECHARGEABLE BATTERY, CARBON MATERIAL FOR NEGATIVE ELECTRODE FOR LOW CRYSTALLINE CARBON-IMPREGNATED LITHIUM ION RECHARGEABLE BATTERY, NEGATIVE ELECTRODE PLATE, AND LITHIUM ION RECHARGEABLE BATTERY |
摘要 |
There is obtained a carbon material for lithium-ion secondary battery negative electrode, a low-crystalline carbon impregnated carbon material for lithium-ion secondary battery negative electrode, a negative electrode plate, and a lithium-ion secondary battery, each of which realizes a first charge/discharge cycle with less gas generation and provides a rapid charge/discharge. The carbon material is obtained by: blending and kneading a carbonaceous aggregate with a binder to form a composition; press molding the composition into an article; carbonizing the press molded article; graphitizing the article to obtain an artificial graphite block; milling the block; and carrying out particle size control. The carbon material has characteristics of: (1) R-value = (I 1360 /I 1580 ) ‰¥ 0.2, where R-value is defined by the ratio of D band to G band in Raman spectrum using Nd: YAG laser light of 532 nm wavelength; and (2) d(002) ‰¥ 0.336nm, and Lc(002) ‰¤ 50 nm, where d(002) and Lc(002) are crystallographic parameters calculated by Gakushin-method. The carbon material is used for the negative electrode plate of a lithium-ion secondary battery, and used in the lithium-ion secondary battery having therein the negative electrode plate. |
申请公布号 |
EP2061107(A4) |
申请公布日期 |
2012.02.22 |
申请号 |
EP20070768280 |
申请日期 |
2007.07.06 |
申请人 |
TOYO TANSO CO., LTD. |
发明人 |
OHTA, NAOTO;HOSHI, KAZUHITO;BITO, SHINGO;YAMANAKA, AKIO;OKUNI, TOMOYUKI |
分类号 |
C01B31/04;H01M4/02;C04B35/52;H01M4/133;H01M4/58;H01M4/587;H01M10/05 |
主分类号 |
C01B31/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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