Magnesium-based solid electrolyte, method for preparing the same, and battery

A multi-stage solid-phase low-temperature sintering and pulverization process addresses the lack of a mass production method for magnesium titanium phosphate, enabling safe and cost-effective production for solid-state batteries, addressing lithium resource scarcity.

JP2025524167AActive Publication Date: 2025-07-25YIBIN NANMU NANO TECH CO LTD
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Patent Information

Application Number
JP2025504585
Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
Priority Date
2022-07-27
Filing Date
2023-05-26
Publication Date
2025-07-25
Estimated Expiration
2043-05-26

AI Technical Summary

Technical Problem

Current reports lack a suitable manufacturing method for magnesium titanium phosphate materials, particularly one that is suitable for mass production.

Method used

A multi-stage solid-phase low-temperature sintering and multiple pulverization process is employed to prepare pure-phase magnesium titanium phosphate powder, enhancing reaction activity and enabling low-temperature secondary sintering.

Benefits of technology

The method is safe, cost-effective, and facilitates mass production of magnesium titanium phosphate, which is advantageous for solid-state batteries, alleviating lithium raw material shortages and promoting sustainable energy development.

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Abstract

The present invention relates to a magnesium-based solid electrolyte, a preparation method thereof, and a battery. The preparation method includes: mixing a magnesium compound, a titanium compound, and a phosphorus compound in a required theoretical mixing ratio to obtain a mixed precursor; pre-sintering the mixed precursor in an air atmosphere with a sintering temperature of 500°C to 700°C and a sintering time of 5 to 15 hours to obtain a sintered precursor; performing a pulverization treatment on the sintered precursor to obtain a powder material; sintering the powder material in an air atmosphere at 900°C to 1200°C for 5 to 10 hours and performing a crystallization treatment on the powder material to obtain a magnesium-based solid electrolyte.
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Citation Information

Patent Citations

  • Electrode materials for magnesium batteries

    JP2013533577A

  • Ion-conducting battery containing solid electrolyte material

    JP2016517146A

  • Solid electrolyte, and all-solid ion secondary cell using same

    WO2014141456A1