New solid sulfide electrolytes
AssigneeSolvay SA
InventorsLauriane D'Alencon, Thierry Le Mercier, Marc-David Braida
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Abstract
The present invention concerns a method for producing a solid material according to general formula (I) as follows: Li6-x_2yCuxPS5_yX (I) wherein X is selected from the group consisting of: F, CI, I and Br; 0.005 ≤ x ≤ 5; and 0 ≤y ≤ 0.5.; comprising at least bringing at least lithium sulfide, phosphorous sulfide, halogen compound and a copper compound, optionally in one or more solvents. The invention also refers to said solid materials and their use as solid electrolytes notably for electrochemical devices.
Claims22
A solid material according to general formula (I) as follows:
- wherein:
- X is selected from the group consisting of F, Cl, I and Br;
- 0.005 ≤ x ≤ 5;
- and
- 0 ≤ y ≤ 0.5..
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A solid electrolyte comprising at least a solid material of formula (I) as follows:
- wherein:
- X is selected from the group consisting of F, Cl, I and Br;
- 0.005 ≤ x ≤ 5;
- and
- 0 ≤ y ≤ 0.5..
An electrode comprising at least:
- a metal substrate;
- directly adhered onto said metal substrate, at least one layer made of a composition comprising:
- (i) a solid material of formula (I) as follows:
- wherein:
- X is selected from the group consisting of F, Cl, I and Br;
- 0.005 ≤ x ≤ 5;
- and
- 0 ≤ y ≤ 0.5;
- (ii) at least one electro-active compound (EAC);
- (iii) optionally at least one lithium ion-conducting material (LiCM) other than the solid material of formula (I);
- (iv) optionally at least one electro-conductive material (ECM);
- (v) optionally a lithium salt (LIS);
- (vi) optionally at least one polymeric binding material (P).
Dependencies are inferred from the claim text.