Benzene sulfonate additive and application thereof in sodium-ion battery electrolyte
By using benzenesulfonate additives in sodium ion battery electrolytes, a stable inorganic SEI film is formed, which solves the problems of easy gas production, poor high and low temperature performance and short cycle life of existing electrolyte additives during circulation, and achieves high performance and long life of sodium ion batteries.
CN119708043AActive Publication Date: 2025-03-28GUANGDONG JUSHI CHEM CO LTD +2
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Patent Information
- Application Number
- CN202411831321.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-12
- Publication Date
- 2025-03-28
- Estimated Expiration
- 2044-12-12
AI Technical Summary
Technical Problem
The existing sodium ion battery electrolyte additives have limited improvements in battery performance, and there are problems such as easy gas production during circulation, poor high and low temperature performance, and short cycle life.
Method used
A benzene sulfonate electrolyte additive is designed, which contains phenyl groups and sulfonate groups, which can form a stable inorganic SEI film in the sodium ion battery electrolyte, and improve the battery's anti-overcharge performance and oxidation stability.
Benefits of technology
It effectively improves the high voltage resistance, working temperature range, safety and cycle stability of sodium ion batteries, extends the cycle life of the battery, and reduces production costs.
✦ Generated by Eureka AI based on patent content.
Abstract
The invention belongs to the technical field of battery electrolyte additives, and particularly discloses a benzenesulfonate additive and application thereof in a sodium-ion battery electrolyte, and the benzenesulfonate additive is a compound with a structural formula shown in a formula (I): # imgabs0. The phenyl group in the benzenesulfonate additive improves the overcharge prevention performance of a battery; the sulfonate group can form a stable inorganic SEI film and improve the oxidation stability, and the two functional units are combined to be used for the sodium ion battery electrolyte additive, so that the high voltage resistance, the working temperature range, the safety and the cycle stability of the battery can be effectively improved, and popularization and application of the low-cost, high-safety and long-cycle sodium ion secondary battery in the energy storage field are facilitated; and the defects of the existing sodium ion secondary battery electrolyte in many performances are overcome.
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