METHOD FOR ACTIVATING SECONDARY BATTERY

Title:

METHOD FOR ACTIVATING SECONDARY BATTERY

Document Type and Number:

WIPO Patent Application WO/2020/105974

Kind Code:

A1

Abstract:

The present invention relates to a method for activating a secondary battery. The present invention comprises: a primary charging step of charging a secondary battery including a positive electrode, a negative electrode, a separator, and an electrolyte; a room temperature-aging step of storing, at a room temperature, the secondary battery that has undergone the primary charging step; and a high temperature-aging step of storing, at a high temperature, the secondary battery that has undergone the room temperature-aging step, wherein charging/discharging is performed by alternately applying + current and - current to the secondary battery at the end of the primary charging step. The method for activating a secondary battery according to the present invention includes alternately applying + current and - current to the secondary battery at the end of the primary charging step to stabilize an SEI film, thereby shortening a following-up aging time.

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Inventors:

CHA IN YOUNG (KR)
BAE JOON SUNG (KR)
YU SUNG HOON (KR)
CHOI SEUNG YOUN (KR)
HWANG GYU OK (KR)

Application Number:

PCT/KR2019/015680

Publication Date:

May 28, 2020

Filing Date:

November 15, 2019

Export Citation:

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Assignee:

LG CHEMICAL LTD (KR)

International Classes:

H01M10/44; H01M4/04; H01M10/04; H01M10/058

Foreign References:

KR20140139357A	2014-12-05
KR20030047655A	2003-06-18
KR20150015303A	2015-02-10
KR101609423B1	2016-04-05
KR20150049479A	2015-05-08
KR20180143603A	2018-11-20

Other References: