US 11,670,752 B2
Cathode for metal-air battery including spaces for accommodating metal oxides formed during discharge of metal-air battery and metal-air battery including the same
Heungchan Lee, Seongnam-si (KR); Dongmin Im, Seoul (KR); and Hyunpyo Lee, Seoul (KR)
Assigned to SAMSUNG ELECTRONICS CO., LTD., Gyeonggi-Do (KR)
Filed by SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed on Dec. 14, 2020, as Appl. No. 17/120,633.
Application 17/120,633 is a division of application No. 15/795,841, filed on Oct. 27, 2017, granted, now 10,916,762.
Claims priority of application No. 10-2016-0144480 (KR), filed on Nov. 1, 2016; and application No. 10-2017-0121876 (KR), filed on Sep. 21, 2017.
Prior Publication US 2021/0098773 A1, Apr. 1, 2021
Int. Cl. H01M 4/13 (2010.01); H01M 4/96 (2006.01); H01M 4/86 (2006.01); H01M 12/08 (2006.01); H01M 4/02 (2006.01)
CPC H01M 4/13 (2013.01) [H01M 4/8626 (2013.01); H01M 4/96 (2013.01); H01M 12/08 (2013.01); H01M 2004/028 (2013.01); Y02E 60/10 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A cathode for a metal-air battery, the cathode comprising:
a plurality of cathode materials, each of the plurality of cathode materials having a cylindrical or cone shape and using oxygen as an active material; and
a plurality of electrolyte films, each of the plurality of electrolyte films being disposed on an outer circumferential surface of a corresponding one of the plurality of cathode materials;
wherein a space, which is not occupied by the plurality of cathode materials and the plurality of electrolyte films, is defined between the plurality of electrolyte films,
wherein the plurality of cathode materials is spaced apart from each other by a predetermined distance,
wherein each of the plurality of cathode materials has a diameter of 150 nm or less, and
wherein each of the plurality of electrolyte films has a thickness of 10 nm or less.