发明名称 GRAPHITE PARTICLE, LITHIUM ION SECONDARY BATTERY, NEGATIVE ELECTRODE MATERIAL THEREFOR, AND NEGATIVE ELECTRODE
摘要 <P>PROBLEM TO BE SOLVED: To provide a lithium ion secondary battery having high discharge capacity, high initial charge discharge efficiency, no solvent dependency, and making quick charge possible even if a negative electrode is manufactured by using, especially, an aqueous binder; and to provide a negative electrode material for it; a negative electrode; and graphite particles. <P>SOLUTION: The graphite particles are mesophase small globular graphitized substances, in which a spacing d<SB>002</SB>in the direction of c axis as determined by X-ray diffraction is less than 0.337 nm, and after mechanochemical treatment, in Raman spectrum using argon laser beams with a wavelength of 514.5 nm, when intensity of peak in 1570-1630 cm<SP>-1</SP>regions is represented by I<SB>G</SB>and that of peak in 1350-1370 cm<SP>-1</SP>regions is represented by I<SB>D</SB>, I<SB>D</SB>/I<SB>G</SB>is in a range of 0.4-2. <P>COPYRIGHT: (C)2009,JPO&INPIT
申请公布号 JP2009110968(A) 申请公布日期 2009.05.21
申请号 JP20080324564 申请日期 2008.12.19
申请人 JFE CHEMICAL CORP 发明人 EGUCHI KUNIHIKO;HATANO HITOMI;IJIRI MAKIKO;TAJIMA YOICHI;TAKAGI YOSHINORI
分类号 H01M4/36;C01B31/04;H01M4/02;H01M4/133;H01M4/587;H01M4/62 主分类号 H01M4/36
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