GRAPHITE POWDER, ITS MANUFACTURING METHOD, AND CONDUCTIVE MATERIAL CONSISTING THEREOF FOR BATTERY

PROBLEM TO BE SOLVED: To provide a graphite powder with high conductivity and high water repellency and suitable for a conductive material for a battery and its manufacturing method. SOLUTION: The graphite powder has a DBP absorption of 80-200mL/100g and satisfies inequality (1): D50/DCP mode diamet...

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Hauptverfasser:	OCHIAI TSUNEMI, TAKANAGA SHIGEYUKI
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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Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a graphite powder with high conductivity and high water repellency and suitable for a conductive material for a battery and its manufacturing method. SOLUTION: The graphite powder has a DBP absorption of 80-200mL/100g and satisfies inequality (1): D50/DCP mode diameter ≥ 0.8 (wherein DCP mode diameter is the mode diameter of the centrifugal sedimentation particle diameter in a Stokes region; and D50 is the half-value width of the mode diameter). Preferably, the mean primary particle diameter is 10-100nm; and the DCP mode diameter is 50-500nm. The graphite powder is manufactured preferably by induction heating carbon black to graphitize it. COPYRIGHT: (C)2004,JPO