HIGH-NICKEL ELECTRODE SHEET HAVING REDUCED REACTIVITY WITH MOISTURE AND MANUFACTURING METHOD THEREFOR

Title:

HIGH-NICKEL ELECTRODE SHEET HAVING REDUCED REACTIVITY WITH MOISTURE AND MANUFACTURING METHOD THEREFOR

Document Type and Number:

WIPO Patent Application WO/2021/225316

Kind Code:

A1

Abstract:

In the present invention, a slurry for a second cathode mixture is applied to both edge regions of an electrode sheet holing portion during storage of an electrode sheet having a high content of nickel, wherein the edge regions are vulnerable to moisture penetration and high in rolling reduction ratio and the slurry contains a cathode active material more resistant to rolling than that applied to the center region of the holding portion, whereby the reactivity of nickel and moisture is suppressed as much as possible to improve the lifespan characteristics of the battery.

Inventors:

HAN SONG YI (KR)
RYU JI HOON (KR)

Application Number:

PCT/KR2021/005217

Publication Date:

November 11, 2021

Filing Date:

April 26, 2021

Export Citation:

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Assignee:

LG ENERGY SOLUTION LTD (KR)

International Classes:

H01M4/131; B05C5/02; H01M4/04; H01M4/1391; H01M4/505; H01M4/525; H01M10/052

Foreign References:

JP2016115567A	2016-06-23
KR20170103184A	2017-09-13
JP2014207201A	2014-10-30
JP2009211956A	2009-09-17
KR101324213B1	2013-11-06
KR20200054235A	2020-05-19
KR20210049862A	2021-05-06
JP2019149269A	2019-09-05

Other References: