US 11,757,094 B2
Battery and method of manufacturing the same
Huisu Jeong, Seongnam-si (KR); Hwiyeol Park, Ansan-si (KR); Kyounghwan Kim, Seoul (KR); Jeongkuk Shon, Hwaseong-si (KR); Junhyeong Lee, Seoul (KR); Sungjin Lim, Suwon-si (KR); and Jin S. Heo, Suwon-si (KR)
Assigned to SAMSUNG ELECTRONICS CO., LTD., Gyeonggi-Do (KR)
Filed by SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed on Jul. 27, 2020, as Appl. No. 16/939,208.
Claims priority of application No. 10-2019-0094020 (KR), filed on Aug. 1, 2019.
Prior Publication US 2021/0036313 A1, Feb. 4, 2021
Int. Cl. H01M 4/36 (2006.01); H01M 4/66 (2006.01); H01M 4/04 (2006.01); H01M 4/1391 (2010.01); H01M 10/0525 (2010.01); H01M 4/131 (2010.01); H01M 50/46 (2021.01)
CPC H01M 4/366 (2013.01) [H01M 4/0471 (2013.01); H01M 4/131 (2013.01); H01M 4/1391 (2013.01); H01M 4/661 (2013.01); H01M 10/0525 (2013.01); H01M 50/46 (2021.01)] 20 Claims
OG exemplary drawing
 
1. A battery comprising:
a cathode layer;
a cathode current collector on the cathode layer;
an anode layer on the cathode layer;
an anode current collector on the anode layer;
a separator between the cathode layer and the anode layer; and
an electrolyte between the cathode layer and the anode layer,
wherein the cathode layer comprises
a plurality of crystal grains of a cathode active material and aligned in a first direction, and
at least one groove formed in a direction perpendicular to an upper surface of the cathode layer that is in contact with the separator, and
wherein a side surface of the cathode layer exposed by the at least one groove is aligned with a <101> crystal direction, a <hk0> crystal direction wherein h and k are integers greater than or equal to 1, or a combination thereof, of the crystal grains of the cathode active material.