METHOD FOR PRE-LITHIATING SILICON OXIDE ANODE FOR SECONDARY BATTERY

Title:

METHOD FOR PRE-LITHIATING SILICON OXIDE ANODE FOR SECONDARY BATTERY

Document Type and Number:

WIPO Patent Application WO/2018/212453

Kind Code:

A1

Abstract:

The present invention relates to a method for pre-lithiating a silicon oxide anode for a secondary battery and, more specifically, to a method for pre-lithiating a silicon oxide anode, which, before a step of assembling a lithium secondary battery, immerses a silicon oxide anode in an electrolyte, and after the same becomes wet, brings a lithium metal into direct contact with the silicon oxide anode while applying pressure to the silicon oxide anode. The silicon oxide anode for a secondary battery that has undergone the pre-lithiating step provided by the present invention has improved irreversibility, and the secondary battery produced by using the silicon oxide anode for a secondary battery has excellent charging and discharging efficiency.

Inventors:

CHAE OH BYONG (KR)
SONG JUN HYUK (KR)
KIM EUN KYUNG (KR)
KANG YOON AH (KR)
WOO SANG WOOK (KR)

Application Number:

PCT/KR2018/003989

Publication Date:

November 22, 2018

Filing Date:

April 04, 2018

Export Citation:

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Assignee:

LG CHEMICAL LTD (KR)

International Classes:

H01M4/1391; H01M4/04; H01M4/131; H01M4/485; H01M10/0525

Foreign References:

JP2007500922A	2007-01-18
JP2016511916A	2016-04-21
KR20140072339A	2014-06-13
KR101594784B1	2016-02-17

Other References: