Energy storage device and method of manufacturing thereof
An energy storage device comprising an electrode having a borophene layer, which includes borophene particles and an ionic liquid, the energy storage device providing high capacity, fast charging, light weight, and long shelf life, and a method of manufacturing the energy storage device.
1 . A method of preparing an energy storage device, the method comprising:
applying borophene particles on a surface of a substrate;
spraying an ionic liquid on the borophene particles on the substrate to form a pre-coat layer;
spreading the pre-coat layer to form a borophene layer, thereby forming one or more electrodes;
laminating the one or more electrodes between a first protective layer and a second protective layer to form an electrode assembly;
enclosing the electrode assembly in a housing; and
attaching a positive connector and a negative connector to an outer surface of the housing.
2 . The method of claim 1 , wherein the ionic liquid is aqueous phosphoric acid.
3 . The method of claim 1 , wherein a particle size of the borophene particles is in a range from 0.001 to 2 μm.
4 . The method of claim 1 , wherein the substrate is a microporous vulcanized cellulose or an aluminum foil.
5 . The method of claim 1 , wherein each of the first and second protective layers is a plastic layer formed of a plastic material comprising polyethylene, polypropylene, polyvinylchloride or nylon.
6 . The method of claim 1 , wherein the electrode assembly includes two or more electrodes and a third protective layer between the two or more electrodes.
7 . The method of claim 1 , wherein the borophene layer is formed on both top and bottom surfaces of the substrate.