Positive electrode active material for secondary batteries with anhydrous electrolyte and secondary battery with anhydrous electrolyte
DE602023018635T2Active Publication Date: 2026-06-17PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD
Patent Information
- Authority / Receiving Office
- DE · DE
- Patent Type
- Patents
- Current Assignee / Owner
- PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD
- Filing Date
- 2023-02-09
- Publication Date
- 2026-06-17
AI Technical Summary
Technical Problem
Lithium-containing composite oxides used in non-aqueous electrolyte secondary batteries face issues with increased direct-current resistance (DCIR) and reduced charge-discharge cycle characteristics due to side reactions with the non-aqueous electrolyte.
Method used
A positive electrode active material with a layered rock-salt structure containing specific amounts of Ca and Sr, along with a sulfonate compound on the surface and interfaces of secondary particles, is used to improve dispersibility and protect the lithium-containing composite oxide from non-aqueous electrolyte interactions.
Benefits of technology
The solution reduces direct-current resistance and enhances charge-discharge cycle characteristics of the battery, providing improved performance and stability.
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