FLUORINE-CONDUCTING GLASSLIKE SOLID ELECTROLYTE Russian patent published in 2018 - IPC H01M6/18 C03C3/32 

FIELD: electrical engineering.

SUBSTANCE: invention relates to the field of fluorine-conducting solid electrolytes having a high anionic electrical conductivity for fluorine ions. Fluorine-conductive solid electrolyte based on fluoride glass PbF₂+InF₃+BaF₂ has a composition, mol. %: PbF₂ 7–54, InF₃ 11–49, BaF₂ 7–32, AlF₃ 2–20 and LiF 10–20. In order to produce electrolytes the following steps are carried out: separate melting PbF₂, BaF₂, AlF₃ and LiF; fluorinating the resulting melts; cooling the resulting solutions to room temperature; adding to the obtained fluorinated reagents PbF₂, BaF₂, AlF₃, LiF, which are taken in the ratio PbF₂ 7–54 mol. %, BaF₂ 7–32 mol. %, AlF₃ 2–20 mol. %, LiF 10–20 mol. %, fifth reagent (NH₄)₃InF₆ in an amount of 11–49 mol. %, blending and milling all five ingredients together to produce charge PbF₂+(NH₄)₃InF₆+BaF₂+AlF₃+LiF; adding NH₄F to the resulting charge, NH₄F is taken in an amount of 1/5–1/4 of the mass of the charge; melting charge at 850–950 °C, and then homogenizing it for 1–2 minutes before the formation of a homogeneous glass mass.

EFFECT: invention makes it possible to ensure high stability of fluoride glass to the crystallization process and to achieve stable values of the fluorine-ionic conductivity 1×10^-5–7×10^-5 Ω^-1⋅cm^-1 at a temperature of 150 °C.

2 cl, 1 dwg