US 11,735,745 B2
Lithium-air battery
Karel Vanheusden, Woodside, CA (US); Ratnakumar Bugga, Arcadia, CA (US); and Daniel Cook, Woodside, CA (US)
Assigned to Lyten, Inc., San Jose, CA (US)
Filed by Lyten, Inc., San Jose, CA (US)
Filed on Sep. 27, 2021, as Appl. No. 17/485,888.
Claims priority of provisional application 63/211,445, filed on Jun. 16, 2021.
Prior Publication US 2022/0407085 A1, Dec. 22, 2022
Int. Cl. H01M 4/86 (2006.01); H01M 12/08 (2006.01); H01M 4/36 (2006.01); H01M 4/134 (2010.01); H01M 4/62 (2006.01); H01M 4/90 (2006.01); H01M 4/38 (2006.01); H01M 4/02 (2006.01)
CPC H01M 4/8626 (2013.01) [H01M 4/134 (2013.01); H01M 4/366 (2013.01); H01M 4/382 (2013.01); H01M 4/628 (2013.01); H01M 4/9083 (2013.01); H01M 12/08 (2013.01); H01M 2004/027 (2013.01); H01M 2004/8689 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A lithium-air battery in fluid communication with an ambient atmosphere, the lithium-air battery comprising:
an anode configured to release a plurality of lithium (Li) ions;
a cathode positioned opposite to the anode, the cathode including a plurality of pores, pathways, and cavities defined by one or more carbonaceous structures arranged in the cathode, where each carbonaceous structure is based on coalescence of a corresponding group of porous non-hollow carbonaceous spherical particles;
an electrolyte dispersed throughout the cathode and in contact with the anode;
a separator positioned between the anode and the cathode; and
a protective layer disposed on the anode, the protective layer comprising:
a polymeric network deposited over one or more exposed surfaces of the anode, the polymeric network including carbonaceous materials grafted with a plurality of fluorinated polymer chains cross-linked with each other, wherein the carbonaceous materials include one or more of graphene, few layer graphene, many layer graphene, graphene nanoparticles, or 3D graphene scaffolds; and
a lithium fluoride (LiF) film formed from the polymeric network and lithium provided by the anode.