US 12,202,737 B2
Porous garnet ribbon by reaction sintering method
Aaron David DeGeorge, Painted Post, NY (US); Barbara Anna Oyer, Hornell, NY (US); Soumyadyuti Samai, Paris (FR); Zhen Song, Painted Post, NY (US); Cameron Wayne Tanner, Horseheads, NY (US); and Patrick David Tepesch, Corning, NY (US)
Assigned to CORNING INCORPORATED, Corning, NY (US)
Filed by CORNING INCORPORATED, Corning, NY (US)
Filed on Oct. 27, 2022, as Appl. No. 17/974,646.
Claims priority of provisional application 63/273,374, filed on Oct. 29, 2021.
Prior Publication US 2023/0140520 A1, May 4, 2023
Int. Cl. H01M 10/0562 (2010.01); C01G 25/00 (2006.01)
CPC C01G 25/006 (2013.01) [H01M 10/0562 (2013.01); C01P 2002/30 (2013.01); C01P 2002/54 (2013.01); C01P 2002/76 (2013.01); C01P 2004/03 (2013.01); C01P 2006/16 (2013.01); C01P 2006/40 (2013.01); H01M 2300/0077 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A method of making a sintered LLZO ribbon, the method comprising:
sintering a tape cast slip composition at a temperature of greater than or equal to 600° C. to produce the sintered LLZO ribbon, the tape cast slip composition comprising:
Li2CO3,
a lanthanum compound,
ZrO2, and
at least one of the group consisting of: a dispersant, solvent, plasticizer, binder, and defoamer,
wherein the tape cast slip composition comprises substantially no pore forming agent,
wherein the sintered LLZO ribbon comprises an open-pore lithium-ion conducting ceramic layer comprising:
a porosity of from greater than or equal to 50% to less than or equal to 90%,
a d90 pore size of less than or equal to 10 μm, and
the thickness of the open-pore lithium-ion conducting ceramic layer is from greater than or equal to half the d90 pore size and less than or equal to 70 μm.