NEGATIVE ELECTRODE FOR LITHIUM SECONDARY BATTERY AND LITHIUM SECONDARY BATTERY COMPRISING SAME

Title:

NEGATIVE ELECTRODE FOR LITHIUM SECONDARY BATTERY AND LITHIUM SECONDARY BATTERY COMPRISING SAME

Document Type and Number:

WIPO Patent Application WO/2020/218773

Kind Code:

A1

Abstract:

The present invention relates to a negative electrode for a lithium secondary battery, and a lithium secondary battery comprising same, wherein the negative electrode for a lithium secondary battery comprises: a current collector; and a negative electrode active material layer including a first layer formed on the current collector and a second layer formed on the first layer, the first layer containing a first carbon-based negative electrode active material, and the second layer containing a second carbon-based negative electrode active material, wherein the degree of divergence (DD) value of the first layer is 30-90% of the DD value of the negative electrode active material layer, and the DD value is defined by formula 1 below. [Formula 1] DD(Degree of Divergence) = (Ia/Itotal) * 100 (In formula 1, Ia is the sum of intensities of peaks at out-of-plane angles as measured by XRD with CuKα, and Itotal is the sum of intensities of peaks at all angles as measured by XRD with CuKα).

Inventors:

LEE JINHYON (KR)
KIM HONGJEONG (KR)
EOM HYERI (KR)
LEE SANGJUN (KR)
LIM DAESEOP (KR)

Application Number:

PCT/KR2020/005073

Publication Date:

October 29, 2020

Filing Date:

April 16, 2020

Export Citation:

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Assignee:

SAMSUNG SDI CO LTD (KR)

International Classes:

H01M4/133; H01M4/02; H01M4/36; H01M4/587; H01M10/0525

Foreign References:

KR20180047846A	2018-05-10
KR20180035693A	2018-04-06
KR20180048131A	2018-05-10
KR20140138079A	2014-12-03
KR20120054243A	2012-05-30
JP2014137879A	2014-07-28

Other References: