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 |
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.
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