Glass frit, crystallized glass, method for producing crystallized glass, solid electrolyte, and lithium ion secondary battery
AssigneeAGC Inc.
InventorsTakeya Mezaki, Noriyoshi Kayaba, Tomohiro Sakai
Life of this patent
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Abstract
A glass frit includes a glass which contains: Li; at least one selected from the group consisting of B, Si, P, Ge, and Te; O; and at least one selected from the group consisting of F, Cl, Br, and I. The glass is to turn into a crystallized glass including an amorphous phase and a crystalline phase, the crystalline phase precipitated by a heat treatment at a temperature equal to or higher than a glass transition temperature and equal to or lower than a glass crystallization temperature. The crystallized glass shows diffraction peaks at 2θ=22.8±0.5°, 2θ=32.1±0.5° and 2θ=39.6±0.5° in a powder X-ray diffraction pattern using Cu-Kα radiation.
Claims20
A glass frit, comprising
- a glass having a composition comprising Li, at least one selected from the group consisting of B, Si, and Ge, O, and at least one selected from the group consisting of F, Cl, Br, and I,
- wherein the glass comprises, by cation %, from 50% to 75% of Li+ and from 25% to 50% of at least one selected from the group consisting of B3+, Si4+, and Ge4+, and by anion %, from 70% to 92% of O2− and from 8% to 30% of at least one selected from the group consisting of F−, Cl−, Br− and I−, and upon a heat treatment of the glass at a temperature in a range of a glass transition temperature of the glass to a glass crystallization temperature of the glass, a crystallized glass comprising an amorphous phase and a crystalline phase having an anti perovskite structure is formed, the crystalline phase precipitated by the heat treatment, and the crystallized glass has diffraction peaks at 2θ=22.8±0.5°, 2θ=32.1±0.5° and 2θ=39.6±0.5° in a powder X-ray diffraction pattern using Cu-Kα radiation.
A crystallized glass, comprising:
- a. crystallized glass composition comprising an amorphous phase and a crystalline phase,
- wherein the crystallized glass composition comprises Li, at least one selected from the group consisting of B, Si, and Ge, O, and at least one selected from the group consisting of F, Cl, Br and I, and having diffraction peaks at 2θ==22.8±0.5°, 2θ=32.1±0.5° and 2θ==39.6±0.5° in a powder X-ray diffraction pattern using Cu-Kα radiation, the crystalline phase has an anti perovskite structure, and the crystalline glass composition comprises, by cation %, from 50% to 75% of Li+ and from 25% to 50% of at least one selected from the group consisting of B3+, Si4+, and Ge4+, and by anion %, from 70% to 92% of O2− and from 8% to 30% of at least one selected from the group consisting of F−, Cl−, Br− and I−.
Dependencies are inferred from the claim text.