Positive Electrode Active Material, and Positive Electrode and Lithium Secondary Battery Which Include the Same
AssigneeLG Chem, Ltd.
InventorsKyu Ri KIM, Jeong Jin YANG, Min Seong KIM, Ju Han YOON, Myeong Sang JEONG, Jeong Hun KIM
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Abstract
A positive electrode active material includes a lithium-rich manganese-based oxide having a composition represented by a following Formula 1: Li1+a1Mnx1Niy1Mz1O2+b1 (1). In Formula 1, 0.100≤a1≤0.400, 0≤b1<1.0, 0.50≤x1<1.0, 0<y1<0.50, 0.001≤z1≤0.01, and 1.50≤x1/y1. In Formula 1, M is a metal with an oxidation number of +5 or +6. A positive electrode includes the positive electrode active material. A lithium secondary battery includes the positive electrode.
Claims15
A positive electrode active material comprising a lithium-rich manganese-based oxide having a composition represented by a following Formula 1:
- wherein:
- 0.1
- ≤
- a
-
- 1
- ≤
- 0.4
- ,
- 0
- ≤
- b
-
- 1
- <
- 1.
- ,
- 0.5
- ≤
- x
-
- 1
- <
- 1.
- ,
- 0
- <
- y
-
- 1
- <
- 0.5
- ,
- 0.001
- ≤
- z
-
- 1
- ≤
- 0.01
- ,
- and
- 1.5
- ≤
- x
-
- 1
- /
- y
-
- 1
- ;
- and
- M is a metal with an oxidation number of +5 or +6.
Dependencies are inferred from the claim text.