NEGATIVE ELECTRODE ACTIVE MATERIAL, METHOD FOR MANUFACTURING THE SAME, AND LITHIUM BATTERY COMPRISING THE SAME

PROBLEM TO BE SOLVED: To provide a negative electrode active material, a method for manufacturing the same, and a lithium battery comprising the same.SOLUTION: A negative electrode active material comprises carbonaceous cores having a sulfur content of 10 to 900 ppm, and an amorphous carbon layer co...

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Hauptverfasser:	LEE SO-RA, SIN CHANG SOO, KIM BUM KWON, KIN JAE MYUNG, TO GISHO
Format:	Patent
Sprache:	eng
Schlagworte:	BASIC ELECTRIC ELEMENTS ELECTRICITY PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
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creator	LEE SO-RA SIN CHANG SOO KIM BUM KWON KIN JAE MYUNG TO GISHO
description	PROBLEM TO BE SOLVED: To provide a negative electrode active material, a method for manufacturing the same, and a lithium battery comprising the same.SOLUTION: A negative electrode active material comprises carbonaceous cores having a sulfur content of 10 to 900 ppm, and an amorphous carbon layer continuously formed on the surface of each carbonaceous core. The carbonaceous cores have a crystalline platy structure. The crystallite size obtained from the half width at the peak corresponding to the (002) face in the X-ray diffraction spectrum of the carbonaceous cores is in the range of 10 to 45 nm. A lithium battery comprises a negative electrode containing the negative electrode active material. Thus the capacity characteristics and the cycle life characteristics are improved.
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subjects	BASIC ELECTRIC ELEMENTS ELECTRICITY PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
title	NEGATIVE ELECTRODE ACTIVE MATERIAL, METHOD FOR MANUFACTURING THE SAME, AND LITHIUM BATTERY COMPRISING THE SAME
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