US 12,355,034 B2
All solid state battery with improved durability and method for manufacturing the same
Sang Wan Kim, Yuseong-gu (KR); Young Jin Nam, Suwon-si (KR); Sung Man Cho, Gwacheon-si (KR); Jae Min Lim, Suwon-si (KR); and Hong Suk Choi, Hwaseong-si (KR)
Assigned to Hyundai Motor Company, Seoul (KR); and Kia Corporation, Seoul (KR)
Filed by Hyundai Motor Company, Seoul (KR); and Kia Corporation, Seoul (KR)
Filed on Dec. 1, 2021, as Appl. No. 17/457,175.
Claims priority of application No. 10-2020-0170220 (KR), filed on Dec. 8, 2020.
Prior Publication US 2022/0181700 A1, Jun. 9, 2022
Int. Cl. H01M 10/0562 (2010.01); H01M 4/133 (2010.01); H01M 4/134 (2010.01); H01M 4/36 (2006.01); H01M 4/38 (2006.01); H01M 4/587 (2010.01); H01M 4/64 (2006.01); H01M 10/0525 (2010.01); H01M 10/0585 (2010.01); H01M 50/474 (2021.01); H01M 50/486 (2021.01); H01M 50/593 (2021.01)
CPC H01M 10/0585 (2013.01) [H01M 4/133 (2013.01); H01M 4/134 (2013.01); H01M 4/364 (2013.01); H01M 4/38 (2013.01); H01M 4/587 (2013.01); H01M 10/0525 (2013.01); H01M 50/593 (2021.01)] 19 Claims
OG exemplary drawing
 
1. An all solid state battery comprising:
a cathode current collector;
a cathode active material layer disposed on the cathode current collector and in contact with a designated area of the cathode current collector;
a solid electrolyte layer disposed on the cathode active material layer, and comprising a central part disposed on the cathode active material layer based on a stack direction of the all solid state battery, and a peripheral part extending from the central part and contacting the cathode current collector while surrounding side surfaces of the cathode active material layer, and comprising a solid electrolyte;
an anode layer disposed on the solid electrolyte layer and having an area greater than an area of the cathode active material layer but less than an area of the solid electrolyte layer; and
a spacer disposed on the solid electrolyte layer, wherein:
an inner side surface of the spacer surrounds the anode layer by contacting an entirety of all side surfaces of the anode layer,
the anode layer comprises an anode current collector, and a coating layer disposed on the anode current collector, and
the coating layer is stacked on the solid electrolyte layer in contact with the solid electrolyte layer.