Encapsulating silica into PAA/FGODs/PPy for conductive hydrogels

Abstract

Abstract Hydrogels crosslinked by polyacrylic acid (PAA) own good mechanical properties and strong tensile strength, can remain stable during long-term cycling and do not fail due to fracture. As a model of electrode active materials, nano silica was encapsulated into a composite hydrogel of functional graphene quantum dots (FGQDs), polypyrrole (PPy) and PAA to obtain a FGQDs/PAA/Si/PPy hydrogel. The nanostructure and conductivity of FGQDs/PAA/Si/PPy hydrogels were analysed, and the hydrogels were promising as aqueous binders.