Graphene based sulfonated polyvinyl alcohol hydrogel nanocomposite for flexible supercapacitors. J. Electrochem. Sci. Eng. [Internet]. 2021 Aug. 3 [cited 2026 Jun. 16];11(3):197-20. Available from: https://pub.iapchem.org/ojs/index.php/JESE/article/view/1031