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    • 2. 发明公开
    • 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
    • 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
    • EP2061107A1
    • 2009-05-20
    • EP07768280.5
    • 2007-07-06
    • TOYO TANSO CO., LTD.
    • OHTA, NaotoHOSHI, KazuhitoBITO, ShingoYAMANAKA, AkioOKUNI, Tomoyuki
    • H01M4/58C01B31/04
    • H01M4/133C01B32/20H01M4/1393H01M4/583H01M10/0525H01M2004/021H01M2004/027
    • 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.
    • 那里获得用于锂离子二次电池负极用碳材料,锂离子二次电池用负极,负电极板以及锂离子二次电池中,低结晶性碳浸渍的碳材料的每一个实现了 与气体产生少第一充电/放电循环,并提供快速的充电/放电。 该碳材料通过以下步骤获得:混合和捏合与粘结剂的碳质骨料以形成组合物; 压制成形组合物成制品; 碳化该压制成型制品; 石墨化该制品以获得在人造石墨块; 研磨该块; 并进行粒径控制。 的碳材料具有的特点:(1)R值=(I 1360 / I 1580)‰¥0.2,其中R值由D的绑G采用钕在拉曼光谱拴之比定义:YAG激光光 波长532nm; 和(2)D(002)‰¥0.336nm,和LC(002)‰¤50纳米,其中d(002)和LC(002)是由学振法算出的结晶参数。 将碳材料用于锂离子二次电池的负电极板,并且在具有负极板在其中的锂离子二次电池中使用。