US 12,444,768 B2
Inorganic compounds having an argyrodite-type structure, their preparation processes and their uses in electrochemical applications
Fabien Nassoy, Boucherville (CA); Benoît Fleutot, Boucherville (CA); Marc-André Girard, Montréal (CA); Steve Duchesne, Montréal (CA); Catherine Gagnon, Sainte-Julie (CA); Alexis Perea, Montréal (CA); David Rozon, Montréal (CA); and Sergey Krachkovskiy, Boucherville (CA)
Assigned to HYDRO-QUÉBEC, Montréal (CA)
Filed by HYDRO-QUÉBEC, Montréal (CA)
Filed on Oct. 27, 2022, as Appl. No. 18/050,119.
Claims priority of application No. CA 3136069 (CA), filed on Oct. 27, 2021; and application No. CA 3179099 (CA), filed on Oct. 12, 2022.
Prior Publication US 2023/0132005 A1, Apr. 27, 2023
Int. Cl. H01M 10/0562 (2010.01); H01M 4/04 (2006.01)
CPC H01M 10/0562 (2013.01) [H01M 4/0404 (2013.01); H01M 2300/0068 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A process for preparing an inorganic compound having an argyrodite-type structure based on an alkali metal, the process comprising:
a step of grinding sulfide of the alkali metal, sulfate of the alkali metal, phosphorus pentasulfide and a halide of the alkali metal, wherein the alkali metal is lithium, sodium, or potassium, the inorganic compound having an argyrodite-type structure is of formula M6−x−2yPS5−x−yOyZ1+x, M is the alkali metal selected from lithium, sodium, or potassium, Z is a halogen atom selected from fluoride, chloride, bromide, and iodide, x is a number such that 0≤x≤1 and represents the number of Z in excess of 1 or is equal to zero, and y is a number such that 0<y≤1.