Cathode for metal-air battery and metal-air battery including the same
AssigneeSamsung Electronics Co., Ltd.
InventorsHeungchan Lee, Dongmin Im, Hyunpyo Lee
Life of this patent
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Abstract
Provided is a metal-air battery including a cathode having a space which may be filled with a metal oxide formed during a discharge of the metal-air battery and thus having improved energy density and lifespan. The cathode for the metal-air battery includes a plurality of cathode materials, a plurality of electrolyte films disposed on surfaces of the plurality of cathode materials, and a plurality of spaces which are not occupied by the plurality of cathode materials and the plurality of electrolyte films. A volume of the plurality of spaces may be greater than or equal to a maximum space of a metal oxide formed during a discharge of the metal-air battery.
Claims26
A cathode for a metal-air battery, the cathode comprising:
- a plurality of cathode materials;
- a plurality of electrolyte films disposed on surfaces of the plurality of cathode materials;
- and
- a space which is not occupied by the plurality of cathode materials and the plurality of electrolyte films,
- wherein a volume of the space is greater than or equal to a maximum volume of a metal oxide formed during a discharge of the metal-air battery.
A cathode for a metal-air battery, the cathode comprising:
- a cathode layer which uses oxygen as an active material;
- a plurality of holes vertically defined through the cathode layer;
- a plurality of electrolyte films disposed on inner walls of the cathode layer, which define the plurality of holes;
- and
- a plurality of spaces of the plurality of holes which are surrounded by the plurality of electrolyte films,
- wherein a volume of the plurality of spaces is greater than or equal to a maximum volume of a metal oxide formed during a discharge of the metal-air battery.
Dependencies are inferred from the claim text.