一种磷酸铁锂电池电解液及其制备方法
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SHANDONG YAOMI NEW ENERGY TECH CO LTD
- Filing Date
- 2025-08-07
- Publication Date
- 2026-07-17
AI Technical Summary
Existing lithium iron phosphate battery electrolytes are prone to decomposition and gas production under extreme conditions, exhibiting flammability and explosiveness. Single phosphorus-containing flame retardants have poor flame retardant efficiency, and high content of flame retardants can affect the battery's electrochemical performance.
A lithium iron phosphate battery electrolyte is prepared by synthesizing nitrogen-, sulfur-, and phosphorus-containing flame retardants through specific steps. The gas phase and condensed phase flame retardant effects are utilized to release non-combustible gases, capture free radicals, generate a strong dehydrating acid source to form a carbon layer, and block the combustion reaction.
It improves the safety of lithium iron phosphate batteries, enhances flame retardant properties, prevents combustion spread, and improves the high-temperature stability and electrochemical performance of the batteries.
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