Positive electrode active material for rechargeable lithium battery, positive electrode including the same, and rechargeable lithium battery including the positive electrode
By using positive electrode active materials composed of particles of chemical formula 1 and chemical formula 2, combined with conductive materials and binders, the shortcomings of rechargeable lithium batteries in terms of energy density, operating voltage and conductivity have been solved, and the performance of high-performance batteries has been improved.
CN120854501APending Publication Date: 2025-10-28SAMSUNG SDI CO LTD
Patent Information
- Application Number
- CN202510520642.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Priority Date
- 2024-04-26
- Filing Date
- 2025-04-24
- Publication Date
- 2025-10-28
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Figure CN120854501A_ABST
Abstract
A positive electrode active material for a rechargeable lithium battery, a positive electrode including the positive electrode active material, and a rechargeable lithium battery including the positive electrode active material are provided. The positive electrode active material includes first particles including a compound of Chemical Formula 1 and having a first average particle diameter, and second particles including a compound of Chemical Formula 2 and having a second average particle diameter larger than the first average particle diameter. A content (e.g., an amount) of the first particles is greater than a content (e.g., an amount) of the second particles, and wherein the positive electrode active material includes manganese (Mn) and cobalt (Co), and a ratio of the Mn content (e.g., an amount) to the Co content (e.g., an amount) in the positive electrode active material is about 7: 1 to about 12: 1. Chemical formula 1 Lia1Fex1Mny1Xz1PO4-b1 and chemical formula 2 Lia2Nix2Coy2Bz2Yc2O2-b2
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Citation Information
Patent Citations
Method of chiral symmetry breaking of chiral crystalline substance
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