US 11,901,506 B2
Lithium-stuffed garnet electrolytes with secondary phase inclusions
Larry Beck, Ann Arbor, MI (US); Cheng-Chieh Chao, San Jose, CA (US); Lei Cheng, San Jose, CA (US); Niall Donnelly, Malvern, PA (US); William H. Gardner, Concord, MA (US); Tim Holme, Mountain View, CA (US); Will Hudson, Belmont, CA (US); Sriram Iyer, Cupertino, CA (US); Oleh Karpenko, San Jose, CA (US); Yang Li, San Jose, CA (US); and Gengfu Xu, Santa Clara, CA (US)
Assigned to QuantumScape Battery, Inc., San Jose, CA (US)
Filed by QuantumScape Battery, Inc., San Jose, CA (US)
Filed on Mar. 30, 2022, as Appl. No. 17/709,393.
Application 17/709,393 is a continuation of application No. 16/621,659, granted, now 11,489,193, previously published as PCT/US2017/039069, filed on Jun. 23, 2017.
Prior Publication US 2022/0328867 A1, Oct. 13, 2022
Int. Cl. H01M 10/0562 (2010.01); C01G 25/00 (2006.01); H01M 10/0525 (2010.01)
CPC H01M 10/0562 (2013.01) [C01G 25/006 (2013.01); H01M 10/0525 (2013.01); C01P 2002/36 (2013.01); C01P 2002/74 (2013.01); C01P 2004/61 (2013.01); H01M 2220/20 (2013.01); H01M 2300/0071 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A bilayer comprising:
a metal foil or metal powder bonded to one side of a sintered lithium-stuffed garnet thin film;
wherein the sintered lithium-stuffed garnet thin film thickness is less than 50 μm and greater than 10 nm;
wherein the sintered lithium-stuffed garnet thin film includes:
a primary cubic phase lithium-stuffed garnet characterized by the chemical formula LiALaBAlCM″DZrEOF, wherein 5<A<8; 1.5<B<4; 0.1<C<2; 0<D<2; 1<E<3; 1O<F<13; and M″ is selected from the group consisting of Mo, W, Nb, Y, Ta, Ga, Sb, Ca, Ba, Sr, Ce, Hf, and Rb; and
a secondary phase inclusion;
wherein:
the primary cubic phase lithium-stuffed garnet is present in the sintered lithium-stuffed garnet thin film at about 70-99.9 vol % with respect to the volume of the sintered lithium-stuffed garnet thin film; and
the secondary phase inclusion is present in the sintered lithium-stuffed garnet thin film at about 0.1-30 vol % with respect to the volume of the sintered lithium-stuffed garnet thin film,
wherein the secondary phase inclusion comprises LiAlO2 present in the bilayer at about 0.1-25 vol %.