Title:
SOLID ELECTROLYTE MATERIAL FOR FLUORIDE ION BATTERIES AND PRODUCTION METHOD FOR SOLID ELECTROLYTE MATERIAL FOR FLUORIDE ION BATTERIES
Document Type and Number:
WIPO Patent Application WO/2023/100599
Kind Code:
A1
Abstract:
Provided is a solid electrolyte material for fluoride ion batteries that has high fluoride ion conduction. According to the present invention, a solid electrolyte material for fluoride ion batteries includes a metal fluoride complex that has, as a principal phase, a crystal structure that contains adduct ions in a fluorite structure that includes fluoride ions, lanthanoid metal ions, and alkali earth metal ions. The ion radius of the adduct ions is greater than the ion radius of the alkali earth metal ions. The composition of the metal fluoride complex is such that the ratio of the number of moles of the fluoride ions to the total number of moles of the lanthanoid metal ions, the alkali earth metal ions, and the adduct ions is greater than 1.87 but less than 3 and such that the ratio of the number of moles of the adduct ions to the number of moles of the alkali earth metal ions is less than 1.
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Inventors:
HATA SHOMA (JP)
Application Number:
PCT/JP2022/041419
Publication Date:
June 08, 2023
Filing Date:
November 07, 2022
Export Citation:
Assignee:
NICHIA CORP (JP)
International Classes:
H01M10/36; H01B1/06; H01M10/0562
Foreign References:
| JP2018092863A | 2018-06-14 | |||
| JP2018077992A | 2018-05-17 | |||
| JP2020102393A | 2020-07-02 | |||
| JP2018186026A | 2018-11-22 | |||
| JP2003229142A | 2003-08-15 |
Other References:
K. E. D. WAPENAAR; J. SCHOONMAN: "The Ionic Conductivity of Fluorite-Structured Solid Solutions of Composition: MF2 :UF4 :CeF8 (M = Ca, Sr, Ba)", JNAL OF ELECTROCHEMICAL STY, vol. 126, no. 4, 1 April 1979 (1979-04-01), pages 667 - 672, XP001350457
Attorney, Agent or Firm:
YAMAO, Norihito et al. (JP)
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