Solid electrolyte material and solid-state battery made therewith

Patent metadata

Field	Value
Publication number	US-12166173-B2
Application number	US-202217734874-A
Country	US
Kind code	B2
Filing date	May 2, 2022
Priority date	Mar 29, 2017
Publication date	Dec 10, 2024
Grant date	Dec 10, 2024

Abstract

A solid electrolyte material comprises Li, T, X and A wherein T is at least one of P, As, Si, Ge, Al, and B; X is one or more halogens or N; A is one or more of S and Se. The solid electrolyte material has peaks at 17.8°±0.75° and 19.2°±0.75° in X-ray diffraction measurement with Cu-Kα(1,2)=1.5418 Å and may include glass ceramic and/or mixed crystalline phases.

First claim

What is claimed is:

1. A solid electrolyte material comprising:
a crystalline phase comprising Li, P, X and A wherein X is one or more halogens or N; A is one or more of S and Se; and the crystalline phase has peaks at 17.8°±0.75° and 19.2°±0.75° in X-ray diffraction measurement with Cu-Kα(1,2)=1.5418 Å.

2. The solid electrolyte material of claim 1 , wherein the crystalline phase may be described by the general formula:
Li 1-a-c-d P a A c X d

in which 0<a≤0.129, 0.316≤c≤0.484, 0.012≤d≤0.125.

3. The solid electrolyte material of claim 2 , wherein a=0.111, c=0.444, d=0.056, A=S, and X=Cl.

4. The solid electrolyte material of claim 1 , further comprising at least one of glass ceramic phases and mixed phases.

5. The solid electrolyte material of claim 1 , wherein mixed phases comprise the crystalline phases containing peaks at 20.2°±0.75° and 23.6°±0.75°, and/or 21.0°±0.75° and 28.0°±0.75°, and/or 17.5°±0.75° and 18.2°±0.75° in X-ray diffraction measurement with Cu-Kα(1,2)=1.5418 Å.

6. The solid electrolyte material of claim 5 , wherein a ratio of peak intensity at 19.2°±0.75° to a peak at 17.5°±0.75° is 1 or more.

7. A lithium solid-state battery comprising a positive electrode active material layer containing a positive electrode active material; a negative electrode active material layer containing a negative electrode active material; and a solid electrolyte layer disposed between the positive electrode active material layer and the negative electrode active material layer, wherein at least one of the positive electrode active material layer, the negative electrode active material layer, and the solid electrolyte layer comprises the solid electrolyte material according to claim 1 .

Assignees

• Solid Power Operating Inc

Inventors

• Francisco Brian E
• Platt Heather A S
• Becker Collin R
• Buettner-Garrett Joshua

Classifications

• H01M2300/0068

  inorganic · CPC title

• H01M10/052

  Li-accumulators · CPC title

• Y02E60/10

  Energy storage using batteries · CPC title

• C03C10/0027

  containing SiO2, Al2O3, Li2O as main constituents · CPC title

• C03C10/00

  Devitrified glass ceramics, i.e. glass ceramics having a crystalline phase dispersed in a glassy phase and constituting at least 50% by weight of the total composition · CPC title