Solid electrolyte material and solid-state battery made therewith
AssigneeSolid Power Operating, Inc.
InventorsBrian E. Francisco, Benjamin A. Carlson
Life of this patent
Estimating the term…
Abstract
A solid electrolyte material comprising Li, T, X and A wherein T is at least one of P, As, Si, Ge, Al, and B; X is BH4; A is S, Se, or N. The solid electrolyte material may include glass ceramic and/or mixed crystalline phases, and exhibits high ionic conductivity and compatibility with high voltage cathodes and lithium metal anodes.
Claims21
A solid electrolyte material comprising:
- Li, T, X and A, wherein T is at least one element selected from the group consisting of P, As, Si, Ge, Al, and B;
- X is one or more halogens or BH4, BF4, NH2, or NO3, or a combination thereof;
- A is one or more of S, Se, and N;
- wherein the solid electrolyte material has peaks at 2θ=14.6°±0.25°, 15.3°±0.25°, and 25.1°±0.25° in an X-ray diffraction measurement with Cu-Kα(1,2)=1.5418 Å,
- and wherein the solid electrolyte material has a Raman spectrum comprising a peak at 423 cm-1, wherein the peak at 423 cm-1 is the highest intensity peak in a range from 200-700 cm-1.
An electrochemical cell comprising:
- (a) a positive electrode layer containing a positive electrode active material;
- (b) a negative electrode layer containing a negative electrode active material;
- and
- (c) a solid electrolyte containing layer disposed between the positive electrode layer and the negative electrode layer, wherein at least one of the positive electrode layer, the negative electrode layer, and the solid electrolyte containing layer comprises at least one solid electrolyte material comprising:
- Li, T, X and A, wherein
- T comprises P, As, Si, Ge, Al, and B;
- X comprises one or more halogens, BH4, BF4, NH2, or NO3 or combination thereof;
- A comprises one or more of S, Se, and N;
- and
- the at least one solid electrolyte material has peaks at 2θ=14.6°=0.25°, 15.3°±0.25°, and 25.1°±0.25° in an X-ray diffraction measurement with Cu-Kα(1,2)=1.5418 Å,
- and wherein the solid electrolyte material has a Raman spectrum comprising a peak at 423 cm-1 wherein the peak at 423 cm-1 is the highest intensity peak in a range from 200-700cm-1.
A method for producing a solid electrolyte material comprising combining a composition comprising Li, T, and A wherein T is at least one element selected from the group consisting of P, As, Si, Ge, Al, and B;
- and A comprises one or more of S, Se, and N with a compound LiX to form a solid electrolyte material, wherein X comprises one or more halogens, BH4, BF4, NH2, or NO3 or combination thereof;
- wherein the formed solid electrolyte material has peaks at 2θ=14.6°±0.25°, 15.3°±0.25°, and 25.1°±0.25° in an X-ray diffraction measurement with Cu-Kα(1,2)=1.5418Å, and wherein the solid electrolyte material has a Raman spectrum comprising a peak at 423 cm-1, wherein the peak at 423 cm-1 is the highest intensity peak in a range from 200-700 cm-1.
A solid electrolyte material comprising a formula LPS · zLiX, wherein
- LPS denotes a mixture of Li2S and P2S5 having a molar ratio ranging from 1:1 to 4:1;
- LiX represents LiCI, LiBr, LiI, LiBH4, LiBF4, LiNH2, or LiNO3;
- and
- 0.25≤z≤4,
- wherein the solid electrolyte material has peaks at 2θ=14.6°+0.25°, 15.3°+0.25°, and 25.1°+0.25° in an X-ray diffraction measurement with Cu-Kα(1,2)=1.5418Å.
A solid electrolyte material comprising a formula LPS · zLiX, wherein LPS denotes a mixture of Li2S and B2S3 having a molar ratio ranging from 1:1 to 3:1;
- LiX represents LiCI, LiBr, Lil, LiBH4, LiBF4, LiNH2, or LiNO3;
- and
- 0.25≤z≤4,
- wherein the solid electrolyte material has peaks at 2θ=14.6°+0.25°, 15.3°+0.25°, and 25.1°+0.25° in an X-ray diffraction measurement with Cu-Kα(1,2)=1.5418Å.
Dependencies are inferred from the claim text.