US 11,894,546 B2
Atomic layer deposition of stable lithium ion conductive interfacial layer for stable cathode cycling
Yi Cui, Stanford, CA (US); and Jin Xie, Stanford, CA (US)
Assigned to The Board of Trustees of the Leland Stanford Junior University, Stanford, CA (US)
Appl. No. 16/616,933
Filed by The Board of Trustees of the Leland Stanford Junior University, Stanford, CA (US)
PCT Filed May 10, 2018, PCT No. PCT/US2018/032008
§ 371(c)(1), (2) Date Nov. 25, 2019,
PCT Pub. No. WO2018/222366, PCT Pub. Date Dec. 6, 2018.
Claims priority of provisional application 62/513,376, filed on May 31, 2017.
Prior Publication US 2020/0152976 A1, May 14, 2020
Int. Cl. H01M 4/36 (2006.01); H01M 4/131 (2010.01); C23C 16/30 (2006.01); C23C 16/455 (2006.01); H01M 4/04 (2006.01); H01M 4/1391 (2010.01); H01M 4/505 (2010.01); H01M 4/525 (2010.01); H01M 4/62 (2006.01); H01M 10/0525 (2010.01)
CPC H01M 4/366 (2013.01) [C23C 16/30 (2013.01); C23C 16/45531 (2013.01); C23C 16/45553 (2013.01); C23C 16/45555 (2013.01); H01M 4/0404 (2013.01); H01M 4/0428 (2013.01); H01M 4/131 (2013.01); H01M 4/1391 (2013.01); H01M 4/505 (2013.01); H01M 4/525 (2013.01); H01M 4/628 (2013.01); H01M 10/0525 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A coated cathode material comprising:
a cathode active material having a high nickel content of at least about 75% by atomic ratio, wherein the cathode active material is comprised of nickel-containing particles each having a size of about ten microns or less; and
an interfacial layer coating the nickel-containing particles of the cathode active material,
wherein the interfacial layer includes a lithium-containing fluoride, wherein the lithium-containing fluoride contains lithium and at least one additional metal different from lithium, and wherein the interfacial layer is configured to provide an interface between the cathode active material having high nickel content and an electrolyte.