Sulfide solid electrolyte and method for manufacturing same
AssigneeAGC Inc.
InventorsRiku KITAMURA, Naoki FUJII
Life of this patent
Estimating the term…
Abstract
A sulfide solid electrolyte includes 60 mass % or more of a sulfide-based glass phase. The sulfide solid electrolyte includes Li, P, and S as constituent elements, a composition of the sulfide solid electrolyte satisfies Li/P≥2.5, and the sulfide solid electrolyte has a lithium ion conductivity of more than 1 mS/cm at 25° C. when formed into a powder compact at 380 MPa.
Claims10
A sulfide solid electrolyte comprising 60 mass % or more of a sulfide-based glass phase,
- wherein the sulfide solid electrolyte comprises Li, P, and S as constituent elements,
- a composition of the sulfide solid electrolyte satisfies Li/P≥2.5, and
- the sulfide solid electrolyte has a lithium ion conductivity of more than 1 mS/cm at 25° C. when formed into a powder compact at 380 MPa.
A method for producing a sulfide solid electrolyte, which is a method for producing a sulfide solid electrolyte comprising 60 mass % or more of a glass phase, the method comprising:
- in order,
- mixing raw materials to obtain a raw material mixture comprising Li, P, and S;
- heating the raw material mixture to obtain a melt;
- and
- cooling and solidifying the melt to obtain the glass phase,
- wherein the heating and the cooling and solidifying are performed under ambient pressure, and
- a cooling rate during the cooling and solidifying is 100° C./sec or more.
Dependencies are inferred from the claim text.