US 12,255,306 B2
Solid-state lithium ion conductor
Jörg Schumacher, Kornwestheim (DE); Philipp Treis, St. Aldegund (DE); Ulrike Stöhr, Mainz (DE); Thomas Kirsch, Mainz (DE); Wolfgang Schmidbauer, Mainz Finthen (DE); and Andreas Roters, Mainz (DE)
Assigned to SCHOTT AG, Mainz (DE)
Filed by SCHOTT AG, Mainz (DE)
Filed on Apr. 29, 2021, as Appl. No. 17/244,043.
Claims priority of application No. 10 2020 111 658.6 (DE), filed on Apr. 29, 2020.
Prior Publication US 2021/0343996 A1, Nov. 4, 2021
Int. Cl. H01M 4/04 (2006.01); C01B 25/45 (2006.01); C01G 25/00 (2006.01); H01M 4/485 (2010.01); H01M 4/58 (2010.01)
CPC H01M 4/0471 (2013.01) [C01B 25/45 (2013.01); C01G 25/006 (2013.01); H01M 4/485 (2013.01); H01M 4/5825 (2013.01); C01P 2002/30 (2013.01); C01P 2002/54 (2013.01); C01P 2002/72 (2013.01); C01P 2004/60 (2013.01); C01P 2006/40 (2013.01); C01P 2006/82 (2013.01)] 25 Claims
 
1. A method for producing a solid-state lithium ion conductor material, the method comprising the following steps:
(1) providing starting products of a solid-state lithium ion conductor material based on a lithium lanthanum zirconium oxide (LLZO),
wherein the starting products have an excess of lithium in comparison to a stochiometric composition to compensate for loss due to contact with water;
(2) carrying out at least one heating process with the starting products of the solid-state lithium ion conductor material to obtain an intermediate product, wherein the heating process is selected from the group consisting of a melting process, a sintering process, a ceramization process, a calcination of a sol-gel precursor, and a bottom-up synthesis in the pulsation reactor;
(3) feeding the intermediate product onto a channel of a water chute that has an entire bottom surface covered with flowing cold water to cool or quench the intermediate product by contact with the cold water and to form droplets of the intermediate material and controlling a diameter of the droplets by adjusting: a flow rate of the cold water, a feed distance from the water chute, and an angle of inclination of the water chute; and
(4) processing the intermediate product to produce a powder in at least one comminution step.