发明公开
EP2061107A1 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
审中-公开
碳质材料负极可充电锂离子电池,碳质材料可充电负极浸渍锂离子电池LITTLE结晶碳,负电极板和锂离子电池可充电
- 专利标题: 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
- 专利标题(中): 碳质材料负极可充电锂离子电池,碳质材料可充电负极浸渍锂离子电池LITTLE结晶碳,负电极板和锂离子电池可充电
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申请号: EP07768280.5申请日: 2007-07-06
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公开(公告)号: EP2061107A1公开(公告)日: 2009-05-20
- 发明人: OHTA, Naoto , HOSHI, Kazuhito , BITO, Shingo , YAMANAKA, Akio , OKUNI, Tomoyuki
- 申请人: TOYO TANSO CO., LTD.
- 申请人地址: 7-12, Takeshima 5-chome, Nishiyodogawaku Osaka-shi, Osaka 555-0011 JP
- 专利权人: TOYO TANSO CO., LTD.
- 当前专利权人: TOYO TANSO CO., LTD.
- 当前专利权人地址: 7-12, Takeshima 5-chome, Nishiyodogawaku Osaka-shi, Osaka 555-0011 JP
- 代理机构: TBK-Patent
- 优先权: JP2006235615 20060831
- 国际公布: WO2008026380 20080306
- 主分类号: H01M4/58
- IPC分类号: H01M4/58 ; C01B31/04
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.
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