METHOD FOR MANUFACTURING NEGATIVE ELECTRODE

Title:

METHOD FOR MANUFACTURING NEGATIVE ELECTRODE

Document Type and Number:

WIPO Patent Application WO/2019/172661

Kind Code:

A1

Abstract:

The present invention relates to a method for manufacturing a negative electrode, the method comprising the steps of: immersing a preliminary negative electrode in a pre-lithiation solution containing an organolithium compound and a pre-lithiation solvent; and taking the preliminary negative electrode out of the pre-lithiation solution, and then removing the pre-lithiation solvent present on the preliminary negative electrode, wherein the preliminary negative electrode comprises a current collector and a preliminary negative electrode active material layer disposed on the current collector, the preliminary negative electrode active material layer containing a negative electrode active material, and the standard reduction potential of the organolithium compound is lower than the standard reduction potential of the negative electrode active material.

Inventors:

CHAE OH BYONG (KR)
WOO SANG WOOK (KR)
KIM JE YOUNG (KR)

Application Number:

PCT/KR2019/002624

Publication Date:

September 12, 2019

Filing Date:

March 06, 2019

Export Citation:

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Assignee:

LG CHEMICAL LTD (KR)

International Classes:

H01M4/139; H01M4/04; H01M4/1391; H01M4/1393; H01M10/0525

Foreign References:

US5543021A	1996-08-06
JPH10294104A	1998-11-04
US9466830B1	2016-10-11
JP2005085632A	2005-03-31

Other References:

M. G. SCOTT, A. H. WHITEHEAD AND J. R. OWEN: "Chemical Formation of a Solid Electrolyte Interface on the Carbon Electrode of a Li‐Ion Cell", JOURNAL OF THE ELECTROCHEMICAL SOCIETY, vol. 145, no. 5, 31 May 1998 (1998-05-31), pages 1506 - 1510, XP055636546
See also references of EP 3731312A4