| 摘要 |
PROBLEM TO BE SOLVED: To provide a lithium ion secondary battery which is excellent in input and output characteristics and life characteristics in comparison with a conventional lithium ion secondary battery, to provide graphite particles for obtaining the same; and to provide a negative electrode for the lithium ion secondary battery, obtained by using the graphite particles. SOLUTION: The graphite particles are characterized in that the value of the isotropic temperature factor (B value) obtained by the Rietveld analysis of powder X-ray diffraction measurement (XRD) results is≥1.0Å<SP>2</SP>, and the interplanar spacing d002 of carbon 002 plane, searched by powder X-ray diffraction measurement (XRD), is≤3.40Å. The negative electrode for the lithium ion secondary battery using the graphite particles and the lithium ion secondary battery using the negative electrode are also provided. COPYRIGHT: (C)2011,JPO&INPIT |
