US 11,658,311 B2
Cathode for lithium air battery comprising hollow structure and method of manufacturing same
Gwang Seok Oh, Seoul (KR); Katie Heeyum Lim, Seoul (KR); Heejun Kweon, Seongnam-si (KR); and Hansung Kim, Seoul (KR)
Assigned to Hyundai Motor Company, Seoul (KR); Kia Motors Corporation, Seoul (KR); and Industry-Academic Cooperation Foundation, Yonsei University, Seoul (KR)
Filed by HYUNDAI MOTOR COMPANY, Seoul (KR); KIA CORPORATION, Seoul (KR); and Industry-Academic Cooperation Foundation, Yonsei University, Seoul (KR)
Filed on Aug. 11, 2021, as Appl. No. 17/399,575.
Application 17/399,575 is a division of application No. 16/704,273, filed on Dec. 5, 2019, granted, now 11,114,673.
Claims priority of application No. 10-2019-0060899 (KR), filed on May 23, 2019.
Prior Publication US 2021/0376335 A1, Dec. 2, 2021
Int. Cl. H01M 4/96 (2006.01); H01M 4/88 (2006.01); H01M 12/08 (2006.01); H01M 4/86 (2006.01)
CPC H01M 4/96 (2013.01) [H01M 4/8875 (2013.01); H01M 4/8882 (2013.01); H01M 12/08 (2013.01); H01M 2004/8689 (2013.01)] 4 Claims
OG exemplary drawing
 
1. A cathode for a lithium air battery, comprising:
a sheet comprising a plurality of hollow structures, wherein one or more of the hollow structures has a length of about 0.5 μm to about 300 μm, and the plurality of the hollow structures are randomly entangled to form the sheet,
wherein the hollow structures include a carbon material having a nitrogen functional group, and
wherein the nitrogen functional group includes graphitic nitrogen (graphitic-N).