NEGATIVE ACTIVE MATERIAL, LITHIUM BATTERY INCLUDING THE MATERIAL, AND METHOD FOR MANUFACTURING THE MATERIAL

PURPOSE: A negative active material suppresses the volume expansion of a silicon-based alloy, thereby improving the capacity performance of a lithium battery and lifetime. CONSTITUTION: A negative active material includes a silicon-based alloy. The silicon-based alloy includes a matrix and a silicon...

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Main Authors MOON, SUNG HWAN, YURY MATULEVICH, LEE, CHUN GYOO, CHOI, JONG SEO, JEONG, CHANG UI, KIM, JAE HYUK, PARK, YO HAN, KWON, SEUNG UK, SUH, SOON SUNG
Format Patent
LanguageEnglish
Korean
Published 16.10.2013
Subjects
BASIC ELECTRIC ELEMENTS
ELECTRICITY
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
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Summary:PURPOSE: A negative active material suppresses the volume expansion of a silicon-based alloy, thereby improving the capacity performance of a lithium battery and lifetime. CONSTITUTION: A negative active material includes a silicon-based alloy. The silicon-based alloy includes a matrix and a silicon nanoparticle dispersed in the matrix. The particle size distribution of the silicon nanoparticle is D10 >= 10 nm and D90 <= 75 nm. A manufacturing method of the negative active material comprises a step of manufacturing a base alloy with a desired alloy composition for manufacturing a silicon-based alloy; a step of obtaining quenching and solidifying the dissolved material and obtaining a quenching solidification alloy; and a step of crushing the quenching solidification alloy. [Reference numerals] (AA) Example 1; (BB) Comparative example 1
Bibliography:Application Number: KR20130037681