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...
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| creator | YAMAKI MOTOHIRO KUROYANAGI AKIHIRO KOMORIYA MAYURI FUKUGAWA TOMOHITO YAMAMOTO KAZUHIRO |
| description | 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. |
| format | Patent |
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| language | eng ; fre ; ger |
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| subjects | ARTIFICIAL STONE BASIC ELECTRIC ELEMENTS CEMENTS CERAMICS CHEMISTRY COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS COMPOUNDS THEREOF CONCRETE ELECTRICITY INORGANIC CHEMISTRY LIME, MAGNESIA METALLURGY NON-METALLIC ELEMENTS PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY REFRACTORIES SLAG TREATMENT OF NATURAL STONE |
| title | PROCESS FOR MANUFACTURING GRAPHITE POWDER FOR LITHIUM SECONDARY BATTERY NEGATIVE ELECTRODE MATERIAL |
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