A Free-standing Graphene-Polypyrrole Hybrid Paper via Electropolymerization with an Enhanced Areal Capacitance. (10th September 2016)

• Record Type: Journal Article
• Authors: Shu, Kewei; Wang, Caiyun; Zhao, Chen; Ge, Yu; Wallace, Gordon G.
• Is Part Of: Electrochimica acta. Volume 212(2016)
• Page Start: 561
• Page End: 571
• Publication Date: 2016-09-10
• Subjects: Graphene -- Areal capacitance -- Polypyrrole -- Supercapacitor -- Flexible hybrid paper electrode; Electrochemistry -- Periodicals; Electrochemistry, Industrial -- Periodicals; 541.37
• DOI: 10.1016/j.electacta.2016.07.052
• Languages: English
• ISSNs: 0013-4686

Abstract

Abstract: Here we developed a free-standing reduced graphene oxide (rGO)-polypyrrole (PPy) hybrid paper via electropolymerization on a paper-like graphene gel. This flexible hybrid paper displayed a uniform layered structure with PPy coated onto the graphene layers. A high areal mass of 2.7 mg cm −2 could be obtained. It delivered a greatly enhanced areal capacitance of 440 mF cm −2 at 0.5 A g −1, in contrast to that 151∼198.5 mF cm −2 previously reported for graphene paper or polypyrrole-graphene paper. It can retain ∼81% of the initial capacitance at a high current density of 6 A g −1 . The combined high flexibility with outstanding electrochemical performance, makes such novel hybrid paper a promising electrode for flexible supercapacitors.