SILICON-CARBON COMPOSITE AND LITHIUM SECONDARY BATTERY COMPRISING SAME

Title:

SILICON-CARBON COMPOSITE AND LITHIUM SECONDARY BATTERY COMPRISING SAME

Document Type and Number:

WIPO Patent Application WO/2019/083332

Kind Code:

A2

Abstract:

The present invention relates to a silicon-carbon composite and a negative electrode active material, comprising same, for a lithium secondary battery. The silicon-carbon composite comprises carbon-based particles and silicon-based particles, wherein: the silicon-based particles are dispersed and positioned on the surfaces of the carbon-based particles; the carbon-based particles have a specific surface area of 0.4 m2/g to 1.5 m2/g; and the silicon-based particles have doped therein at least one element selected from the group consisting of Mg, Li, Ca and Al.

Inventors:

LEE SU MIN (KR)
KIM EUN KYUNG (KR)
LEE YONG JU (KR)
JO RAE HWAN (KR)
KIM DONG HYUK (KR)
PARK SE MI (KR)

Application Number:

PCT/KR2018/012858

Publication Date:

May 02, 2019

Filing Date:

October 26, 2018

Export Citation:

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Assignee:

LG CHEMICAL LTD (KR)

International Classes:

H01M4/36; H01M4/38; H01M4/485; H01M4/587; H01M10/0525

Foreign References:

KR20170140767A

2017-12-21

Other References: