Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
PROCESS FOR MANUFACTURING GRAPHITE POWDER FOR LITHIUM SECONDARY BATTERY NEGATIVE ELECTRODE MATERIAL
A method for producing a graphite powder for use as a lithium secondary battery negative electrode material easily produces a graphite powder for use as a lithium secondary battery negative electrode material that has a small specific surface area while reducing the energy consumption, and achieving a high graphitization efficiency. The method includes melt-mixing a coke powder and a carbon precursor binder so that an amount of fixed carbon included in the carbon precursor binder is 5 to 15 parts by mass based on 100 parts by mass of the coke powder, to prepare a mixture, and pressing the mixture to prepare a compact, the coke powder being obtained by heating a green coke powder at 600 to 1450°C in a non-oxidizing atmosphere, the green coke powder having a cumulative particle size at 50% in a volumetric cumulative particle size distribution of 5 to 50 µm; heating the compact in a non-oxidizing atmosphere to effect carbonization and graphitization to obtain a graphitized compact; and grinding the graphitized compact.
PROCESS FOR MANUFACTURING GRAPHITE POWDER FOR LITHIUM SECONDARY BATTERY NEGATIVE ELECTRODE MATERIAL
A method for producing a graphite powder for use as a lithium secondary battery negative electrode material easily produces a graphite powder for use as a lithium secondary battery negative electrode material that has a small specific surface area while reducing the energy consumption, and achieving a high graphitization efficiency. The method includes melt-mixing a coke powder and a carbon precursor binder so that an amount of fixed carbon included in the carbon precursor binder is 5 to 15 parts by mass based on 100 parts by mass of the coke powder, to prepare a mixture, and pressing the mixture to prepare a compact, the coke powder being obtained by heating a green coke powder at 600 to 1450°C in a non-oxidizing atmosphere, the green coke powder having a cumulative particle size at 50% in a volumetric cumulative particle size distribution of 5 to 50 µm; heating the compact in a non-oxidizing atmosphere to effect carbonization and graphitization to obtain a graphitized compact; and grinding the graphitized compact.
PROCESS FOR MANUFACTURING GRAPHITE POWDER FOR LITHIUM SECONDARY BATTERY NEGATIVE ELECTRODE MATERIAL
VERFAHREN ZUR HERSTELLUNG EINES GRAPHITPULVERS FÜR NEGATIVES ELEKTRODENMATERIAL EINER LITHIUMSEKUNDÄRBATTERIE
PROCESSUS PERMETTANT DE FABRIQUER UNE POUDRE DE GRAPHITE DESTINÉE À UNE MATIÈRE D'ÉLECTRODE NÉGATIVE DE BATTERIE RECHARGEABLE AU LITHIUM
YAMAMOTO KAZUHIRO (Autor:in) / KOMORIYA MAYURI (Autor:in) / YAMAKI MOTOHIRO (Autor:in) / FUKUGAWA TOMOHITO (Autor:in) / KUROYANAGI AKIHIRO (Autor:in)
10.04.2024
Patent
Elektronische Ressource
Englisch
Process for manufacturing graphite powder for lithium secondary battery negative electrode material
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