POROUS SILICON BASED NEGATIVE ELECTRODE ACTIVE MATERIAL, METHOD FOR MANUFACTURING THE SAME, AND RECHARGEABLE LITHIUM BATTERY INCLUDING THE SAME

The present invention relates to a manufacturing method of a porous silicon based negative electrode active material, a negative electrode active material and a lithium secondary battery including the same. The manufacturing method of a porous silicon based negative electrode active material in the...

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Bibliographic Details
Main Authors CHOI, SIN HO, PARK, SOO JIN, YOON, JI HYUN, BANG, BYOUNG MAN
Format Patent
LanguageEnglish
Korean
Published 02.01.2015
Subjects
BASIC ELECTRIC ELEMENTS
ELECTRICITY
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
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Summary:The present invention relates to a manufacturing method of a porous silicon based negative electrode active material, a negative electrode active material and a lithium secondary battery including the same. The manufacturing method of a porous silicon based negative electrode active material in the present invention comprises the steps of mixing porous silica (SiO_2) with aluminum powders; treating the same with heat; and turning some or entire porous silica into porous silicon (Si) by reducing oxygen while turning some or entire aluminum powders into aluminum oxide by oxidizing.
Bibliography:Application Number: KR20130071793