Title:
POSITIVE ELECTRODE AND LITHIUM SECONDARY BATTERY INCLUDING SAME
Document Type and Number:
WIPO Patent Application WO/2024/085629
Kind Code:
A1
Abstract:
The present invention pertains to a positive electrode and a lithium secondary battery including same, the positive electrode including a lithium-excess manganese-based oxide in which the molar ratio (Li/Me) of lithium to all metals excluding lithium exceeds 1.1, the content of manganese among all the metals excluding lithium is at least 50 mol%, and expression (1) below is satisfied. Expression (1): 0.05 < ITM/ILi <0.13. In expression (1), ITM and ILi are, respectively, the sum of the areas of peaks appearing in the 1000-2500 ppm region and the sum of the areas of peaks appearing in the 300-900 ppm region when peak deconvolution is performed on the 1D NMR center band spectrum extracted from the 2D 7Li Magic Angle Turning Phase Adjusted Spinning Sideband (MATPASS) NMR spectrum of the lithium-excess manganese-based oxide.
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Inventors:
KIM GUN WOO (KR)
HUR HYUCK (KR)
PARK KANG JOON (KR)
KIM DONG HWI (KR)
PARK SIN YOUNG (KR)
PARK BYUNG CHUN (KR)
HAN GI BEOM (KR)
LEE YOU SHIN (KR)
HUR HYUCK (KR)
PARK KANG JOON (KR)
KIM DONG HWI (KR)
PARK SIN YOUNG (KR)
PARK BYUNG CHUN (KR)
HAN GI BEOM (KR)
LEE YOU SHIN (KR)
Application Number:
PCT/KR2023/016101
Publication Date:
April 25, 2024
Filing Date:
October 18, 2023
Export Citation:
Assignee:
LG ENERGY SOLUTION LTD (KR)
International Classes:
H01M4/505; H01M4/02; H01M4/131; H01M4/525; H01M10/0525
Domestic Patent References:
| WO2019132568A1 | 2019-07-04 |
Foreign References:
| KR102189056B1 | 2020-12-10 | |||
| KR20190046617A | 2019-05-07 | |||
| KR20160105348A | 2016-09-06 | |||
| KR20200061234A | 2020-06-02 |
Attorney, Agent or Firm:
BAE, KIM & LEE IP (KR)
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