Positive electrode active material for nonaqueous electrolyte secondary battery, and nonaqueous electrolyte secondary battery
By adding SrMnO3 as the positive electrode active material inside or outside the secondary particles of lithium transition metal composite oxide, the problem of reduced battery capacity caused by side reactions in non-aqueous electrolyte secondary batteries is solved, and the durability and battery capacity are improved.
CN115136353BActive Publication Date: 2026-07-03PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD
- Filing Date
- 2021-02-25
- Publication Date
- 2026-07-03
AI Technical Summary
Technical Problem
In existing non-aqueous electrolyte secondary batteries, side reactions between the positive electrode active material and the electrolyte lead to a reduction in battery capacity, especially when using high-energy-density positive electrode active materials.
Method used
The positive electrode active material, which contains SrMnO3 inside or outside the secondary particles of lithium transition metal composite oxide, is used to suppress the occurrence of side reactions while maintaining good lithium-ion conductivity.
Benefits of technology
It improves the durability and capacity of the secondary battery, and enhances the battery's charge and discharge performance.
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Smart Images
Figure CN115136353B_ABST
Abstract
The positive electrode active material for non-aqueous electrolyte secondary batteries contains lithium transition metal composite oxides that can absorb, store, and release Li, and SrMnO3 is contained inside or outside the secondary particles of the lithium transition metal composite oxides.
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