METHOD FOR PRODUCING SYNTHETIC GRAPHITE MATERIAL FOR LITHIUM-ION SECONDARY BATTERY NEGATIVE ELECTRODES, SYNTHETIC GRAPHITE MATERIAL FOR LITHIUM-ION SECONDARY BATTERY NEGATIVE ELECTRODES, NEGATIVE ELECTRODE FOR LITHIUM-ION SECONDARY BATTERIES, AND LITHIUM-ION SECONDARY BATTERY

A method for producing an synthetic graphite material for lithium-ion secondary battery negative electrodes, including a step of performing a coking treatment on a raw material oil composition by carrying out a delayed coking process to generate a raw coke composition, a step of performing a heat tr...

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Bibliographische Detailangaben
Hauptverfasser:	HIROKI, Toshiyuki, IKAI, Keizo, SUZUKI, Takashi, KIUCHI, Noriyuki, SHIRAI, Takahiro, WANG, Zhen
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:	A method for producing an synthetic graphite material for lithium-ion secondary battery negative electrodes, including a step of performing a coking treatment on a raw material oil composition by carrying out a delayed coking process to generate a raw coke composition, a step of performing a heat treatment on the raw coke composition to obtain a heat-treated raw coke composition, a step of crushing the heat-treated raw coke composition to obtain heat-treated raw coke powder, a step of coating the heat-treated raw coke powder with a coating material to obtain coated heat-treated raw coke powder, and a step of graphitizing the coated heat-treated raw coke powder to obtain an synthetic graphite material for lithium-ion secondary battery negative electrodes, in which a specific surface area of the heat-treated raw coke powder is 10.5 m2/g or greater.