Title:
POSITIVE ELECTRODE AND LITHIUM SECONDARY BATTERY MANUFACTURED USING SAME
Document Type and Number:
WIPO Patent Application WO/2024/101841
Kind Code:
A1
Abstract:
A positive electrode according to the present invention is a positive electrode comprising a positive electrode active material layer formed on a positive electrode current collector, wherein the positive electrode active material layer includes a first positive electrode active material based on a lithium iron phosphate compound and a second positive electrode active material based on a lithium nickel manganese cobalt composite oxide, the second positive electrode active material is included in an amount of 10 wt% or less with respect to the total weight of the first positive electrode active material and the second positive electrode active material, and a ratio (=B/A) of an average particle diameter (D50) B of the second positive electrode active material to an average particle diameter (D50) A of the first positive electrode active material is 3 or more. The positive electrode according to an embodiment of the present invention can have an increased loading amount due to improved rolling performance and enables a great reduction in the thickness of the positive electrode active material layer through rolling, and thus has the effect of providing a lithium iron phosphate-based positive electrode with high energy density.
Inventors:
PARK JEONG HWA (KR)
CHOI JUNG HUN (KR)
KWON O JONG (KR)
KIM KI WOONG (KR)
AN IN GU (KR)
KIM KWANG JIN (KR)
LEE DA YOUNG (KR)
SUNG JIN SU (KR)
HAN GEUM JAE (KR)
CHOI JUNG HUN (KR)
KWON O JONG (KR)
KIM KI WOONG (KR)
AN IN GU (KR)
KIM KWANG JIN (KR)
LEE DA YOUNG (KR)
SUNG JIN SU (KR)
HAN GEUM JAE (KR)
Application Number:
PCT/KR2023/017725
Publication Date:
May 16, 2024
Filing Date:
November 07, 2023
Export Citation:
Assignee:
LG ENERGY SOLUTION LTD (KR)
International Classes:
H01M4/36; H01M4/02; H01M4/131; H01M4/136; H01M4/505; H01M4/525; H01M4/58; H01M10/052
Foreign References:
| KR20100131921A | 2010-12-16 | |||
| US9306214B2 | 2016-04-05 | |||
| KR102111013B1 | 2020-05-14 | |||
| KR101572454B1 | 2015-11-27 | |||
| KR20140131336A | 2014-11-12 |
Attorney, Agent or Firm:
KIM, Hong Gyun (KR)
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