Liquid crystalline graphene oxide/PEDOT: PSS self-assembled 3D architecture for binder-free supercapacitor electrodes

Authors

Md. Monirul Islam, University of WollongongFollow
Alfred T. Chidembo, University of WollongongFollow
Seyed Hamed Aboutalebi, University of WollongongFollow
Dean Cardillo, University of WollongongFollow
Hua-Kun Liu, University of WollongongFollow
Konstantin K. Konstantinov, University of WollongongFollow
S X. Dou, University of WollongongFollow

RIS ID

100499

Publication Details

Islam, M., Chidembo, A. T., Aboutalebi, S., Cardillo, D., Liu, H. Kun., Konstantinov, K. & Dou, S. Xue. (2014). Liquid crystalline graphene oxide/PEDOT: PSS self-assembled 3D architecture for binder-free supercapacitor electrodes. Frontiers in Energy Research, 2 (31), 1-21.

Abstract

Binder-free self-assembled 3D architecture electrodes have been fabricated by a novel convenient method. Liquid crystalline graphene oxide was used as precursor to interact with poly(3,4-ethylene-dioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) in dispersion in order to form a conductive polymer entrapped, self-assembled layer-by-layer structure. This advanced network containing PEDOT:PSS enabled us to ascribe the superior electrochemical properties of particular graphene sheets. This layer-by-layer self-assembled 3D architecture of best performing composite (reduced graphene oxide-PEDOT:PSS 25) showed excellent electrochemical performance of 434 F g⁻¹ through chemical treatment. To highlight these advances, we further explored the practicality of the as-prepared electrode by varying the composite material content. An asymmetric supercapacitor device using aqueous electrolyte was also studied of this same composite. The resulting performance from this set up included a specific capacitance of 132 F g⁻¹. Above all, we observed an increase in specific capacitance (19%) with increase in cycle life emphasizing the excellent stability of this device.