US 12,444,548 B2
Flexible supercapacitor with graphene electrodes embedded in hydrogel electrolyte
Susan Taylor, Stirling (GB); Gabriel Casano, Stirling (GB); and Marco Caffio, Stirling (GB)
Assigned to INTEGRATED GRAPHENE HOLDING LIMITED, Stirling (GB)
Appl. No. 18/249,271
Filed by INTEGRATED GRAPHENE HOLDING LIMITED, Stirling (GB)
PCT Filed Oct. 18, 2021, PCT No. PCT/GB2021/052690
§ 371(c)(1), (2) Date Apr. 17, 2023,
PCT Pub. No. WO2022/079454, PCT Pub. Date Apr. 21, 2022.
Claims priority of application No. 2016447 (GB), filed on Oct. 16, 2020.
Prior Publication US 2023/0402235 A1, Dec. 14, 2023
Int. Cl. H01G 11/56 (2013.01); H01G 11/36 (2013.01); H01G 11/62 (2013.01); H01G 11/86 (2013.01)
CPC H01G 11/36 (2013.01) [H01G 11/56 (2013.01); H01G 11/62 (2013.01); H01G 11/86 (2013.01)] 25 Claims
OG exemplary drawing
 
1. A single symmetric supercapacitor device comprising:
two electrodes, wherein each electrode comprises a 3D foam material obtained by laser irradiating a carbon source; and
a hydrogel electrolyte enveloping the electrodes in an active area, wherein said hydrogel electrolyte comprises a mixture of a hydrogel and a salt;
and wherein the device has an operational voltage window that includes 2.6V.