▎ 摘　　要

NOVELTY - A graphene-based electrode comprises a ferroelectric polymer; and a graphene substrate, where the graphene substrate is coated with the ferroelectric polymer. USE - The graphene-based electrode is useful for making supercapacitor or supercapacitor structure for improved charge and energy storage (claimed). ADVANTAGE - Three-dimensional crystalline foams with high surface areas, high lithium capacity, and high conductivity for use as electrode materials are provided. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for: (1) a supercapacitor for improved charge and energy storage, comprising a first graphene-based electrode comprising a first graphene substrate and optionally a ferroelectric polymer that contacts a first surface of a porous separator with a first surface on the first graphene-based electrode; a second graphene-based electrode comprising a second graphene substrate and optionally a ferroelectric polymer that contacts the second surface of the porous separator with a first surface on the second graphene- based electrode; where at least one of the first or second graphene substrates is coated with the ferroelectric polymer; a first metal electrode making contact with the second surface on the first graphene-based electrode; and a second metal electrode making contact with the second surface on the second graphene-based electrode; and (2) a method of making a supercapacitor structure for improved charge and energy storage, where the supercapacitor comprises a first graphene-based electrode comprising a first graphene substrate and optionally a ferroelectric polymer that contacts a first surface of a porous separator with a first surface on the first graphene-based electrode; a second graphene-based electrode comprising a second graphene substrate and optionally a ferroelectric polymer that contacts the second surface of the porous separator with a first surface on the second graphene- based electrode; where at least one of the first or second graphene substrates is coated with the ferroelectric polymer; a first metal electrode making contact with the second surface on the first graphene-based electrode; and a second metal electrode making contact with the second surface on the second graphene-based electrode; where the method involves: (a) coating at least one of the graphene substrates with a ferroelectric polymer to form a graphene-based electrode where the ferroelectric polymer is coated throughout the graphene substrate; (b) contacting a first graphene-based electrode that is optionally coated with a ferroelectric polymer to a first surface of a porous separator with a first surface on a first graphene-based electrode; (c) contacting a second graphene-based electrode, that is optionally coated with a ferroelectric polymer, to the second surface of the porous separator with a first surface on a second graphene-based electrode; (d) contacting a first metal electrode with the second surface on the first graphene-based electrode that is optionally coated with a ferroelectric polymer; and (e) contacting a second metal electrode with the second surface on the second graphene-based electrode, that is optionally coated with ferroelectric polymer.