GRAPHITE MATERIAL, CARBONACEOUS MATERIAL FOR BATTERY ELECTRODE, AND BATTERY

PROBLEM TO BE SOLVED: To provide a graphite material suitable as an electrode material for nonaqueous electrolyte secondary batteries, a carbonaceous material for battery electrodes, and secondary batteries which exhibit excellent charge-discharge cycle characteristics and excellent severe-current-l...

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Hauptverfasser:	SUDO AKITAKA, YOSHIOKA SHUNSUKE, NISHIMURA KASUKE
Format:	Patent
Sprache:	eng
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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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a graphite material suitable as an electrode material for nonaqueous electrolyte secondary batteries, a carbonaceous material for battery electrodes, and secondary batteries which exhibit excellent charge-discharge cycle characteristics and excellent severe-current-load characteristics. SOLUTION: The graphite material has specific sizes of optically anisotropic and isotropic structures, a specific content ratio between both structures, and various orientation of crystallization. The carbonaceous material for battery electrodes is made using the graphite material and exhibits a large discharge capacity and a small irreversible capacity with the severe-current-load characteristics and cycle characteristics being kept at high levels. COPYRIGHT: (C)2011,JPO&INPIT