CPC H01G 11/24 (2013.01) [H01G 11/32 (2013.01); H01G 11/48 (2013.01); H01G 11/56 (2013.01)] | 20 Claims |
1. A supercapacitor, comprising:
two electrodes; and
a gel electrolyte;
wherein the gel electrolyte comprises:
a polyol compound that is selected from the group consisting of glycerol and ethylene glycol;
a base with a molarity (M) of 1-5 in the polyol compound; and
1-10 wt % of boric acid relative to the weight of the polyol compound;
wherein the boric acid intercalates with a first mixture of the polyol compound and the base, creating a gel;
wherein
the base is selected from a group consisting of lithium hydroxide, sodium hydroxide, and potassium hydroxide;
wherein the two electrodes each comprise:
a second mixture comprising 5-10 wt % of a conductive additive, 5-10 wt % of a binding compound, and 80-90 wt % of an activated carbon, based on the total weight of the conductive additive, the binding compound, and the activated carbon; and
wherein the second mixture is at least partially coated on an inner surface of a substrate;
wherein an outer surface of the substrate is not coated with the second mixture; and
wherein the inner surfaces of the two electrode substrates are separated by and in physical contact with the gel electrolyte to form the supercapacitor.
|