US 12,424,394 B2
Hydrogel electrolyte for a supercapacitor
Emre Cevik, Dammam (SA); and Ayhan Bozkurt, Dammam (SA)
Assigned to Imam Abdulrahman Bin Faisal University, Dammam (SA)
Filed by Imam Abdulrahman Bin Faisal University, Dammam (SA)
Filed on Aug. 2, 2022, as Appl. No. 17/879,457.
Prior Publication US 2024/0047147 A1, Feb. 8, 2024
Int. Cl. H01G 11/56 (2013.01); H01G 11/34 (2013.01); H01G 11/36 (2013.01); H01G 11/42 (2013.01)
CPC H01G 11/56 (2013.01) [H01G 11/34 (2013.01); H01G 11/42 (2013.01); H01G 11/36 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A hydrogel electrolyte for a supercapacitor, comprising:
sodium carboxymethyl cellulose (C);
water;
citric acid (CA); and
an aqueous extract of Hibiscus sabdariffa;
wherein the sodium carboxymethyl cellulose (C) and the citric acid (CA) form a citric acid crosslinked cellulose-based polymer hydrogel (C-CA-C); and
wherein an organic acid from the aqueous extract of Hibiscus sabdariffa is intercalated to the citric acid crosslinked cellulose-based polymer hydrogel (C-CA-C) via hydrogen bonds.