Lithium ion conducting sulfide based crystallized glass and method for production thereof
AssigneesIdemitsu Kosan Co., Ltd., Masahiro Tatsumisago
InventorsMinoru Senga, Yoshikatsu Seino, Masahiro Tatsumisago, Akitoshi Hayashi
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Abstract
A lithium-ion-conducting sulfide-based crystallized glass including: lithium (Li), phosphorus (P), and sulfur (S) elements, wherein the glass has diffraction peaks at 2θ=17.8±0.3 deg, 18.2±0.3 deg, 19.8±0.3 deg, 21.8±0.3 deg, 23.8±0.3 deg, 25.9±0.3 deg, 29.5±0.3 deg and 30.0±0.3 deg in X-ray diffraction (CuKα: λ=1.5418 Å).
Claims18
A lithium-ion-conducting sulfide-based crystallized glass comprising:
- lithium (Li), phosphorus (P), and sulfur (S) elements in a molar ratio of Li2S:P2S5 of from 68 to 74:26 to 32 in terms of Li2S and P2S5,
- wherein the crystallized glass has diffraction peaks at 2θ=17.8±0.3 deg, 18.2±0.3 deg, 19.8±0.3deg, 21.8±0.3 deg, 23.8±0.3 deg, 25.9±0.3 deg, 29.5±0.3 deg and 30.0±0.3 deg in X-ray diffraction, wherein CuKα:
- λ=1.5418 Å.
A method of producing a lithium-ion-conducting sulfide-based crystallized glass, the method comprising:
- preparing a mixture comprising 68 to 74 mol % of Li2S and 26 to 32 mol % of P2S5 and forming a sulfide-based glass from the mixture, and heat-treating the sulfide-based glass at 230 to 360° C., thereby producing the crystallized glass.
A lithium-ion-conducting sulfide-based crystallized glass comprising:
- lithium (Li), phosphorus (P), and sulfur (S) elements in a molar ratio of Li2S:P2S5 of from 68 to 74:26 to 32 in terms of Li2S and P2S5,
- wherein the crystallized glass has diffraction peaks at 2θ=17.8±0.3 deg, 18.2±0.3 deg, 19.8±0.3 deg, 21.8±0.3 deg, 23.8±0.3 deg, 25.9+0.3 deg, 29.5±0.3 deg and 30.0±0.3 deg in X-ray diffraction, wherein CuKα:
- λ=1.5418 Å,
- wherein the crystallized glass is obtained a method comprising heat-treating the sulfide-based glass at a temperature in a range from 230 to 360° C., wherein the heat-treating temperature is equal or higher than the crystallization temperature of the sulfide-based glass, thereby producing the crystallized glass.
Dependencies are inferred from the claim text.