Glass-based solid electrolyte in field of solid-state batteries and preparation method of glass-based solid electrolyte

• Main Authors: LI YUNBAO, SERENA, RENN
• Format: Patent
• Language: Chinese; English
• Published: 12.04.2024
• Subjects: BASIC ELECTRIC ELEMENTS; CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUSENAMELS; CHEMISTRY; ELECTRICITY; GLASS; JOINING GLASS TO GLASS OR OTHER MATERIALS; METALLURGY; MINERAL OR SLAG WOOL; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS,MINERALS OR SLAGS; SURFACE TREATMENT OF GLASS

The invention relates to a glass-based solid electrolyte material which is composed of a glass-based electrolyte material, a binder, fluorine and phosphonium salt, the glass-based electrolyte material is composed of chalcogenide glass Ge2Sb2Sn5, the binder is one or more of polyvinylidene fluoride, polyvinylidene fluoride-hexafluoropropylene and polytetrafluoroethylene, and the phosphonium salt is fluorine. The mass ratio of the binding agent in the composite solid electrolyte is 2% or 5% or 6% or 8% or 10%, the fluorine and phosphine salt is composed of tetrabutylammonium fluoride, tetradecyl trihexylphosphine bis (2, 4, 4-trimethylpentyl) hypophosphite and the like, and the fluorine and phosphine salt is a mixture of fluorine and phosphine salt and tetradecyl trihexylphosphine bis (2, 4, 4-trimethylpentyl) hypophosphite. The glass-based solid electrolyte material prepared by the invention has relatively high mobility and good synergistic effect, and can improve the electron transmission efficiency. 本发明涉及一种玻