Title:
HIGH-NICKEL ELECTRODE SHEET AND METHOD FOR MANUFACTURING SAME
Document Type and Number:
WIPO Patent Application WO/2021/225303
Kind Code:
A1
Abstract:
The present invention relates to an electrode sheet comprising: a first cathode mixture layer which is formed in a central portion of a holding part and contains a first cathode active material of lithium nickel cobalt manganese oxide; and a second cathode mixture layer which is formed at one end or both ends of the first cathode mixture layer and contains a second cathode active material lower in nickel content than the first cathode active material, wherein a rolling density b of the second cathode mixture layer is lower than a rolling density a of the first cathode mixture layer, whereby the electrode sheet has the effect of improving the energy density while suppressing a reaction with water.
Inventors:
HAN SONG YI (KR)
RYU JI HOON (KR)
RYU JI HOON (KR)
Application Number:
PCT/KR2021/004953
Publication Date:
November 11, 2021
Filing Date:
April 20, 2021
Export Citation:
Assignee:
LG ENERGY SOLUTION LTD (KR)
International Classes:
H01M4/131; B05C5/02; B05C11/02; H01M4/02; H01M4/04; H01M4/525; H01M10/052
Foreign References:
| JP2019149269A | 2019-09-05 | |||
| JP2014207201A | 2014-10-30 | |||
| KR101687190B1 | 2016-12-16 | |||
| KR101540673B1 | 2015-07-30 | |||
| JP2009245772A | 2009-10-22 | |||
| KR20200054232A | 2020-05-19 | |||
| KR20210045784A | 2021-04-27 | |||
| JP2019149269A | 2019-09-05 |
Other References:
See also references of EP 3996169A4
Attorney, Agent or Firm:
KIM, Hong Gyun (KR)
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