Title:
SECONDARY BATTERY ELECTRODE AND MANUFACTURING METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2024/029902
Kind Code:
A1
Abstract:
The objective of the present invention is to provide a method for manufacturing a secondary battery electrode, and the secondary battery electrode manufactured thereby, which are capable of simultaneously suppressing an electrode breakage problem during rolling and a burning problem during assembly. According to the present invention, provided is the secondary battery electrode comprising an electrode current assembly, and an electrode mixture layer formed on at least one surface of the electrode current collector so that a part of the electrode current collector is exposed to form an uncoated part, wherein the tensile strength retention of the uncoated part according to formula 1 is 0.75 or greater. [Formula 1] RTS = TSNC / TSML, wherein, in formula 1, RTS is the tensile strength retention of the uncoated part, TSNC is the tensile strength of the uncoated part in an area that excludes area A, which is a partial area in the uncoated part set toward the electrode mixture layer from an end of the uncoated part, and TSML is the tensile strength of the electrode current collector having the electrode mixture layer formed on at least one surface thereof.
Inventors:
KANG YONG-HEE (KR)
KANG BYUNG-CHAN (KR)
KANG BYUNG-CHAN (KR)
Application Number:
PCT/KR2023/011263
Publication Date:
February 08, 2024
Filing Date:
August 01, 2023
Export Citation:
Assignee:
SK ON CO LTD (KR)
International Classes:
H01M4/13; H01M4/02; H01M4/04; H01M4/66
Foreign References:
| KR20210127011A | 2021-10-21 | |||
| JP2005093236A | 2005-04-07 | |||
| JP2007273390A | 2007-10-18 | |||
| JP2015153539A | 2015-08-24 | |||
| JP2004127799A | 2004-04-22 |
Attorney, Agent or Firm:
C&S PATENT AND LAW OFFICE (KR)
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