Title:
ANODE PRE-LITHIATION-PRE-SODIATION METHOD, PRE-LITHIATED AND PRE-SODIATED ANODE, AND LITHIUM SECONDARY BATTERY COMPRISING SAME
Document Type and Number:
WIPO Patent Application WO/2021/045583
Kind Code:
A1
Abstract:
The present invention relates to an anode pre-lithiation-pre-sodiation method, a pre-lithiated and pre-sodiated anode, and a lithium secondary battery comprising the pre-lithiated and pre-sodiated anode, the method comprising the steps of: preparing an anode comprising an anode current collector and an anode active material layer formed on at least one surface of the anode current collector; forming a lithium metal layer by coating a composition, which comprises a lithium metal powder, a polymer binder and a dispersion medium, on the anode active material layer and drying same; forming a sodium metal layer by coating a composition, which comprises a sodium metal powder, a polymer binder and a dispersion medium, on the lithium metal layer and drying same; and dipping the anode, having the lithium metal layer and the sodium metal layer, in an electrolytic solution for pre-lithiation-pre-sodiation.
Inventors:
CHAE OH-BYONG (KR)
KIM YE-RI (KR)
HWANG SEUNG-HAE (KR)
KIM YE-RI (KR)
HWANG SEUNG-HAE (KR)
Application Number:
PCT/KR2020/011993
Publication Date:
March 11, 2021
Filing Date:
September 04, 2020
Export Citation:
Assignee:
LG CHEMICAL LTD (KR)
International Classes:
H01M4/139; H01M4/02; H01M4/04; H01M4/13; H01M10/052
Foreign References:
| JP2017507472A | 2017-03-16 | |||
| KR20180094134A | 2018-08-22 | |||
| JP2016027562A | 2016-02-18 | |||
| KR20140070156A | 2014-06-10 | |||
| JP2012069894A | 2012-04-05 | |||
| KR20190110945A | 2019-10-01 |
Other References:
See also references of EP 4012802A4
Attorney, Agent or Firm:
PHIL & ONZI INT'L PATENT & LAW FIRM (KR)
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