Sodium metal battery and electric device
By using phenyl ether solvents and additives such as nitrates to form a stable electrolyte interface film in sodium metal batteries, the problem of capacity degradation caused by traditional electrolytes in sodium metal batteries is solved, and coulombic efficiency and cycle performance are improved.
CN122118032APending Publication Date: 2026-05-29CONTEMPORARY AMPEREX TECHNOLOGY CO LTD
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- CONTEMPORARY AMPEREX TECHNOLOGY CO LTD
- Filing Date
- 2024-11-29
- Publication Date
- 2026-05-29
AI Technical Summary
Technical Problem
The reaction between traditional carbonate electrolytes and sodium metal leads to a rapid deterioration in the capacity of sodium metal batteries, severely affecting cycle performance. Existing materials cannot effectively solve this problem.
Method used
Using phenyl ether solvents as non-aqueous solvents, combined with salt additives such as nitrates and sodium salts, a stable electrolyte interface film is formed, which improves the sodium ion deposition process and reduces sodium dendrite formation.
Benefits of technology
It improves the coulombic efficiency and cycle performance of sodium metal batteries, reduces the occurrence of internal short circuits, and extends the battery's lifespan.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN122118032A_ABST
Abstract
The application provides a sodium metal battery and an electric device, the sodium metal battery comprising a positive electrode sheet and an electrolyte, the electrolyte comprising: a non-aqueous solvent, the non-aqueous solvent comprising a phenyl ether solvent. Thus, the sodium metal battery provided by the application has good cycle performance.
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