GRAPHITE-CONTAINING COMPOSITION, NEGATIVE ELECTRODE FOR LITHIUM SECONDARY BATTERY, AND LITHIUM SECONDARY BATTERY

摘要

PROBLEM TO BE SOLVED: To provide a negative electrode for a lithium secondary battery and a lithium secondary battery with excellent discharge capacity and cycle characteristics in high rate charge discharge.

SOLUTION: This negative electrode for the lithium secondary battery is prepared in such a way the graphite powder is mixed with a binder, the mixture is formed in a sheet having a density of 1.5 g/cm3or more but 2.0 g/cm3or less, and when the sheet surface is used as a measuring surface of X-ray diffraction, the X-ray diffraction intensity of (002) planes of graphite is prescribed as I(002) and the X-ray diffraction intensity of (110) planes is prescribed as I(110), intensity ratio is set as L(110)/I(002)(%)≥0.5.

COPYRIGHT: (C)2003,JPO