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    • 3. 发明公开
    • NEGATIVE ELECTRODE MATERIAL FOR SECONDARY CELL FOR NONAQUEOUS ELECTROLYTIC SOLUTION, PROCESS FOR THE PRODUCTION THEREOF, AND SECONDARY CELL FOR NONAQUEOUS ELECTROLYTIC SOLUTION USING IT
    • 材料负极的二次电池非水电解质,方法与元件
    • EP0758801A4
    • 1998-05-06
    • EP96905013
    • 1996-03-06
    • SONY CORP
    • YAMADA SHINICHIROAKASHI HIROYUKIIMOTO HIROSHIAZUMA HIDETOKITAMURA KENICHIADACHI MOMOESASAKI TERUETANAKA KOHICHI
    • H01M4/133H01M4/587H01M4/58
    • H01M4/583H01M10/0525
    • A negative electrode material for secondary cells for nonaqueous electrolytic solution realizing a high charge-and-discharge capacity and a high charge-and-discharge efficiency. The electrode material contains a product of carbonization of at least one member selected from among coffee bean, tea leaf, canes, corns, fruits, straws and chaffs; or contains a carbonaceous material resulting from a vegetable polymer and containing metal elements, phosphorus and/or sulfur in a total amount of 0.2 to 20 wt.% in terms of elements; or it contains a carbonaceous material having a diffraction peak at an angle of diffraction (i.e., 2υ) of 30 to 32 degrees in the pattern of X-ray powder diffraction (CuKα). Such a negative electrode material is produced by firing at least one member selected from among coffee bean, tea leaf, canes, corns, fruits, straws and chaffs or a mixture obtained by adding at least one member selected from among metal elements, phosphorus and sulfur to a crystalline or fibrous cellulose to effect carbonization. The obtained material is used in producing a secondary cell for a nonaqueous electrolytic solution fitted with a positive electrode made of a lithium double oxide and a negative electrode made of a carbonaceous negative electrode material capable of doping with lithium ions and dedoping as an active material of the negative electrode as the carbonaceous negative electrode material.
    • 用于实现高充电/放电容量和高的放电效率,其制造寻求材料和用人谋求材料的非水电解液二次电池的方法匿名-wässrige液体电解质的二次电池用负极材料。 负电极材料含有选自咖啡豆,茶叶,甘蔗,玉米,水果,谷物秸秆和谷物壳,由植物来源的高分子材料含衍生的碳质材料中选择的至少一种碳质材料 总和的金属元素,磷及硫的0.2〜20重量%计算值作为具有30°和32°的2个θ驱动的之间的衍射峰的元件或一个碳质材料; 在X射线(CuKα射线阿尔法)粉末衍射图的衍射角。 为生产所说的负极材料,选自咖啡豆,茶叶,甘蔗,玉米,水果,谷物秸秆和谷物壳,或结晶或纤维状纤维素的具有至少一个混合选择的至少一种碳质材料 金属元素,磷或硫,下烧结碳化。 负极材料用于具有形成锂复合氧化物的正极以及形成能够掺杂和去掺杂锂离子的作为活性负电极材料的碳质负极材料构成的负极的非水电解液二次电池。
    • 10. 发明专利
    • ANODE MATERIAL AND METHOD OF MANUFACTURING THE SAME
    • CA2156424A1
    • 1995-07-06
    • CA2156424
    • 1993-12-28
    • SONY CORP
    • IMOTO HIROSHIOMARU ATSUOAZUMA HIDETONISHI YOSHIOGONNO YOSHIHISANAGAMINE MASAYUKI
    • H01M4/02H01M4/38H01M4/58H01M4/04
    • A material for a cathode is made of a carbon material hard to turn to graphite and obtainable by burning a carbon precursor. For this carbon material having the graphitization resistance, the weight % Ps of carbon in the material is smaller than 0.59 or the stacking index SI is smaller than 0.76. This carbon has a structure of stacked layers, which is determined by the diffraction peak due to the (002) plane of the crystal lattice, and the X-ray diffraction spectrum on the side of an angle lower than the diffraction peak among the Xray diffraction spectrum. The average Nave of the number of stacked layers is smaller than 2.46. Alternatively, letting the burning temperature be T ~C, and the half-width of a peak appearing near 1,340 cm-1 in the Raman spectrum be HW, the following condition is satisfied: HW > 138-0.06 T. This carbon material is manufactured by thermally treating a carbon precursor by burining it in an inert gas atmosphere flown at a flow rate of 0.1 ml per minute or more per one gram of the carbon precursor at a temperature of 600 ~C or high, or in an atmosphere pressurized at 50 kPa or less at a temperature of 600 ~C or high. In this case, the carbon precursor is placed in a layer so that the contact area of the precursor with the atmosphere is 10 cm2 or more.