complex electrolytes

JP7874051B2Active Publication Date: 2026-06-15SUMITOMO CHEM CO LTD +2
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Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
SUMITOMO CHEM CO LTD
Filing Date
2022-12-27
Publication Date
2026-06-15

AI Technical Summary

🎯Benefits of technology

【0019】 本発明によれば、複合電解質として使用した場合にリチウムイオンの輸率を改善することができるイオン液体、及びジカチオン型イオン液体を提供するができる。また、本発明によれば、リチウムイオンの輸率が改善された複合電解質を提供することができる。

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Abstract

To provide a composite electrolyte having an improved lithium ion transference number. [Solution] A composite electrolyte comprising an ionic liquid and a lithium salt, wherein the ratio represented by the following formula is 20% or more. Formula: I lim / I ini (In the formula, I lim is the limiting current density, and the limiting current density is the current density at which the current density becomes substantially constant for one hour or more when the current density value is measured while applying a constant voltage of 0.1 V to the composite electrolyte at 25°C, and I ini is the current density 1 second after starting to apply a constant voltage of 0.1 V to the composite electrolyte.
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Claims

[Claim 1] A composite electrolyte comprising an ionic liquid and a lithium salt, The ionic liquid is a dication-type ionic liquid, A composite electrolyte having a ratio of 20% or more, as expressed by the following formula. Formula: I ｌｉｍ / I ｉｎｉ (In the formula, I ｌｉｍ This is the limiting current density, which is the current density at which the current density remains approximately constant for more than one hour when the current density is measured while applying a constant voltage of 0.1 V to the composite electrolyte at 25°C. ｉｎｉ This is the current density 1 second after the constant voltage of 0.1 V is first applied to the composite electrolyte. [Claim 2] The aforementioned limit current density value is 90 μA / cm². ２ The above is the composite electrolyte according to claim 1.