Electrolyte for non-aqueous sodium ion batteries, non-aqueous sodium ion battery, and method for manufacturing a non-aqueous sodium ion battery

The electrolyte for non-aqueous sodium-ion batteries, containing fluorosulfate and specific compounds, addresses cycle and storage challenges, enhancing performance in high-temperature environments by improving cycle characteristics and suppressing gas generation.

JP7883146B2Active Publication Date: 2026-07-01CENT GLASS CO LTD
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Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
CENT GLASS CO LTD
Filing Date
2022-05-11
Publication Date
2026-07-01

AI Technical Summary

Technical Problem

Non-aqueous sodium-ion batteries face challenges in cycle characteristics, gas generation, and high-temperature storage characteristics, particularly in high-temperature environments, limiting their performance in applications like automobiles.

Method used

An electrolyte for non-aqueous sodium-ion batteries comprising fluorosulfate, specific compounds represented by general formulas (1) to (9), vinylene carbonate, tris(trimethylsilyl)borate, tris(trimethylsilyl)phosphate, sodium salts, and non-aqueous solvents, with specific concentration ranges, enhances cycle characteristics and suppresses gas generation at high temperatures.

Benefits of technology

Improves cycle characteristics, reduces gas generation, and enhances high-temperature storage performance of non-aqueous sodium-ion batteries, leading to better performance in high-temperature conditions.

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Patent Text Reader

Abstract

The present disclosure provides: an electrolyte for a non-aqueous sodium ion battery, the electrolyte including (I) fluorosulfate, (II) at least one type selected from the group consisting of compounds represented by specific general formulae (1)-(9), vinylene carbonate, tris(trimethylsilyl)borate, and tris(trimethylsilyl)phosphate, (III) sodium, and (IV) a non-aqueous solvent; a non-aqueous sodium ion battery provided with at least a positive electrode, a negative electrode, and the electrolyte for the non-aqueous sodium ion battery; and a method for producing the non-aqueous sodium ion battery.
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