Non-aqueous electrolyte for batteries, lithium secondary battery precursor, method for manufacturing lithium secondary batteries, and lithium secondary battery

JP7863622B2Active Publication Date: 2026-05-21MITSUI CHEMICALS INC
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Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
MITSUI CHEMICALS INC
Filing Date
2023-09-06
Publication Date
2026-05-21

AI Technical Summary

Technical Problem

Non-aqueous electrolytes containing 1,3-propensultone as an additive face challenges in reducing the initial resistance of batteries effectively.

Method used

A non-aqueous electrolyte formulation using specific additives (compounds I to VIII) within defined concentration ranges to optimize the initial resistance of lithium secondary batteries.

Benefits of technology

The optimized electrolyte composition reduces the initial resistance of lithium secondary batteries, enhancing their performance and efficiency.

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Patent Text Reader

Abstract

This nonaqueous electrolyte solution for batteries contains an additive A, which is a compound (I), and a specific additive B; the content of the additive A is more than 0.01% by mass but less than 0.5% by mass relative to the total amount of this nonaqueous electrolyte solution for batteries. In the formula, each R11 independently represents a fluoro group (-F), a hydrocarbon group that may have a fluoro group (-F) as a substituent, while having 1 to 8 carbon atoms, or a fluorine carbide group having 1 to 8 carbon atoms; and h represents an integer of 0 to 4.
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