US 11,916,190 B2
Method for producing a solid electrolyte material and a solid electrolyte for solid state batteries
Yuki Katoh, Brussels (BE); Geoffroy Hautier, Brussels (BE); Davide Di Stefano, Brussels (BE); and Yaroslav Filinchuk, Louvain-la-Neuve (BE)
Assigned to TOYOTA MOTOR EUROPE, Brussels (BE)
Appl. No. 16/976,406
Filed by TOYOTA MOTOR EUROPE, Brussels (BE)
PCT Filed Mar. 26, 2018, PCT No. PCT/EP2018/057673
§ 371(c)(1), (2) Date Aug. 27, 2020,
PCT Pub. No. WO2019/185116, PCT Pub. Date Oct. 3, 2019.
Prior Publication US 2020/0411904 A1, Dec. 31, 2020
Int. Cl. H01M 10/0562 (2010.01); C01B 25/14 (2006.01); H01M 10/0525 (2010.01)
CPC H01M 10/0562 (2013.01) [C01B 25/14 (2013.01); H01M 10/0525 (2013.01); C01P 2002/72 (2013.01); C01P 2002/74 (2013.01); C01P 2006/40 (2013.01); H01M 2300/0068 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A method for producing a solid electrolyte material for a solid state battery, the solid electrolyte material having the following chemical formula XM2(PS4)3, where P is phosphorus, S is sulfur and X is lithium (Li), sodium (Na), silver (Ag) or magnesium (Mg0,5) and M is titanium (Ti), zirconium (Zr), germanium (Ge), silicon (Si), tin (Sn) or a mixture of X and aluminium (X+Al) and the method comprising:
mixing powders so as to obtain a powder mixture; and
sintering the powder mixture for a period of time equal to or greater than 75 hours and equal to or smaller than 500 hours at a sintering plateau temperature so as to obtain the solid electrolyte material;
wherein the solid electrolyte material exhibits the peaks in positions of 2θ=) 13,64° (±1°,)16,48° (±1° and)22,18° (±1° in a X-ray diffraction measurement using CuKα line, where IA is the intensity in arbitrary units of the peak at)13,64° (±1° and IB is the intensity in arbitrary units of a peak at)23,34° (±1°, (IA−IB)/(IA+IB) >0(±1°,(IA−IB)/(IA+IB) >0.