Lithium argyrodite
AssigneeUniversitat Seigen
InventorsHans-Jörg Deiseroth, Shiao-Tong Kong, Marc Schlosser, Christof Reiner
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Abstract
The invention relates to lithium argyrodite of the general formula (I): Li+(12-n-x)Bn+X2−6-xY−x (I), where Bn+ is selected from the group consisting of P, As, Ge, Ga, Sb, Si, Sn, Al, In, Ti, V, Nb, and Ta; X2− is selected from the group consisting of S, Se, and Te; Y− is selected from the group consisting of Cl, Br, I, F, CN, OCN, SCN, and N3; 0≦x≦2, and a method for the production thereof, and the use thereof as a lithium-ion electrolyte in primary and secondary electrochemical energy storage.
Claims20
A lithium argyrodite of the general formula (I):
- Li+(12-n-x)Bn+X2−6-xY−x (I)
- in which
- Bn+ is selected from the group consisting of P, As, Ge, Ga, Sb, Si, Sn, Al, In, Ti, V, Nb, and Ta,
- X2− is selected from the group consisting of S, Se, and Te,
- Y− is selected from the group consisting of Cl, Br, I, F, CN, OCN, SCN, and N3, and in which 0≦x≦2.
A process for the preparation of a lithium argyrodite of the general formula (I), characterized by the steps:
- mixing of the stoichiometric amounts of the starting substances under an inert gas atmosphere,
- pressing of the resulting powder mixture to give pellets, and
- heating of the pellets to temperatures from 400° C. to 700° C. for a duration of from 3 days to 10 days.
Dependencies are inferred from the claim text.