SYNTHETIC GRAPHITE MATERIAL, SYNTHETIC GRAPHITE MATERIAL PRODUCTION METHOD, NEGATIVE ELECTRODE FOR LITHIUM ION SECONDARY BATTERY, AND LITHIUM ION SECONDARY BATTERY

SYNTHETIC GRAPHITE MATERIAL, SYNTHETIC GRAPHITE MATERIAL PRODUCTION METHOD, NEGATIVE ELECTRODE FOR LITHIUM ION SECONDARY BATTERY, AND LITHIUM ION SECONDARY BATTERY

Provided is a synthetic graphite material, in which a size L (112) of a crystallite in a c-axis direction as calculated from a (112) diffraction line obtained by an X-ray wide angle diffraction method is in a range of 4 to 30 nm, a surface area based on a volume as calculated by a laser diffraction...

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Bibliographische Detailangaben
Hauptverfasser: KAWACHI, Hiroshi, SUZUKI, Takashi, MAEDA, Takashi, SHIRAI, Takahiro, KIUCHI, Noriyuki, KARAKANE, Mitsuo
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
BASIC ELECTRIC ELEMENTS
CHEMISTRY
COMPOUNDS THEREOF
ELECTRICITY
INORGANIC CHEMISTRY
METALLURGY
NON-METALLIC ELEMENTS
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
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Zusammenfassung:Provided is a synthetic graphite material, in which a size L (112) of a crystallite in a c-axis direction as calculated from a (112) diffraction line obtained by an X-ray wide angle diffraction method is in a range of 4 to 30 nm, a surface area based on a volume as calculated by a laser diffraction type particle size distribution measuring device is in a range of 0.22 to 1.70 m2/cm3 an oil absorption is in a range of 67 to 147 mL/100 g, and a half width ΔvG of a peak present in a wavelength range of 1580 cm-1 ± 100 cm-1 is in a range of 19 to 24 cm-1 in Raman spectrum analysis using argon ion laser light having a wavelength of 514.5 nm.