US 11,695,108 B2
Oxide mixture and complex oxide coatings for cathode materials
Dapeng Wang, Cupertino, CA (US); Huiming Wu, San Jose, CA (US); Hongli Dai, Los Altos, CA (US); Xiaoping Wang, Naperville, IL (US); James Gilbert, Bolingbrook, IL (US); John David Carter, Bolingbrook, IL (US); Zhenzhen Yang, Godfrey, IL (US); Anh Vu, Lemont, IL (US); Yan Li, Westmont, IL (US); Yanjie Cui, Arlington Heights, IL (US); Christopher S. Johnson, Naperville, IL (US); Arthur Jeremy Kropf, Westmont, IL (US); and Hakim H. Iddir, Hoffman Estates, IL (US)
Assigned to Apple Inc., Cupertino, CA (US)
Filed by Apple Inc., Cupertino, CA (US)
Filed on Aug. 1, 2019, as Appl. No. 16/529,545.
Claims priority of provisional application 62/713,715, filed on Aug. 2, 2018.
Prior Publication US 2020/0044242 A1, Feb. 6, 2020
Int. Cl. H01M 4/36 (2006.01); H01M 4/525 (2010.01); H01M 4/505 (2010.01); H01M 10/0525 (2010.01); C01G 51/00 (2006.01); H01M 4/62 (2006.01); H01M 4/02 (2006.01)
CPC H01M 4/366 (2013.01) [C01G 51/50 (2013.01); H01M 4/505 (2013.01); H01M 4/525 (2013.01); H01M 4/628 (2013.01); H01M 10/0525 (2013.01); C01P 2004/84 (2013.01); C01P 2006/40 (2013.01); H01M 2004/028 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A cathode active material comprising:
a plurality of cathode active compound particles; and
a coating disposed over each of the cathode active compound particles; the coating comprising a mixture of Al2O3 and ZrO2 or a mixture of La2O3 and Al2O3;
wherein if the coating is a mixture of La2O3 and Al2O3, the coating comprises aluminum from 40 ppm to 300 ppm and lanthanum from 200 ppm to 2000 ppm, and
wherein if the coating is a mixture of Al2O3 and ZrO2, the coating comprises aluminum from 40 ppm Al to 300 ppm Al and from 1000 ppm to 2000 ppm zirconium.