A high-nickel ternary positive electrode material, a preparation method and application thereof
By simultaneously modifying high-nickel ternary cathode materials through doping and coating, the problems of bulk structural instability and interfacial side reactions during cycling have been solved, resulting in a significant improvement in the structural stability and electrochemical performance of the materials, and promoting the commercial application of high-nickel ternary cathode materials.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- 江苏国轩新能源科技有限公司
- Filing Date
- 2026-04-28
- Publication Date
- 2026-07-17
AI Technical Summary
High-nickel ternary cathode materials suffer from bulk structural instability and severe interfacial side reactions during cycling, affecting their cycle performance, rate performance, and safety performance. Single doping or coating modifications are insufficient to simultaneously solve these two core problems.
Two metal oxides with different properties are uniformly mixed with a high-nickel ternary precursor and sintered with lithium salt at high temperature to achieve simultaneous modification of doping and coating. Specifically, La2O3 and ZrO2 are selected as modifiers to form a stable inorganic layer coating material, which inhibits Li+/Ni2+ mixing and isolates the electrode from direct contact with the electrolyte.
It significantly improves the cycle stability and overall electrochemical performance of high-nickel ternary cathode materials, enhances the structural stability and electrochemical performance of the materials, and strengthens the rate performance and safety of the materials.
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Abstract
Citation Information
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