Compound and method for producing the same, solid electrolyte, and electric storage device

A pale-colored halogen-based compound with controlled amorphous phase ratio addresses conductivity and visibility issues in solid electrolytes, enhancing battery performance and work efficiency.

JP2025154373APending Publication Date: 2025-10-10TOAGOSEI CO LTD +1
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Patent Information

Application Number
JP2024057326
Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
Filing Date
2024-03-29
Publication Date
2025-10-10

AI Technical Summary

Technical Problem

Conventional halogen-based solid electrolytes exhibit insufficient ionic conductivity, making them unsuitable for high-capacity and high-power output secondary batteries, and their dark color makes it difficult to visually confirm the mixing of additives, impacting work efficiency.

Method used

A pale-colored halogen-based compound with a specific amorphous phase ratio, formulated as D α M β X 6-γ A γ, where D is an alkali metal, M is a non-alkali metal cation, X is a halogen, and A is a polyatomic anion, is produced through controlled mechanochemical synthesis under cooling to enhance ionic conductivity and facilitate visual confirmation of additive mixing.

Benefits of technology

The compound achieves high ionic conductivity, ensuring safety and efficiency in electricity storage devices by maintaining electrolyte solidification and allowing visual verification of additive blending.

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Patent Text Reader

Abstract

To provide a halogen-based compound capable of exhibiting high ionic conductivity and enabling visual checking of the mixing state of an additive when a dark-colored additive is incorporated.SOLUTION: There is provided a compound that satisfies formula (1) and has a mass fraction of an amorphous phase of 10% or more, wherein in formula (1), α and β are each independently a value greater than 0, γ is a value of 0 or more and less than 6, D represents an alkali metal element, M includes an element serving as a metal cation other than alkali metal elements, X represents a halogen element, and A represents an atomic group serving as a polyatomic anion containing two or more elements. Formula (1): DαMβX6-γAγ.SELECTED DRAWING: None
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Citation Information

Patent Citations

  • Solid electrolyte, manufacturing method thereof, and all-solid lithium-ion secondary battery

    JP2023049975A

  • All-solid-state sodium ion secondary battery

    WO2019003846A1