Issue 34, 2015

Porous reduced graphene oxide paper as a binder-free electrode for high-performance supercapacitors

Abstract

A facile template approach is developed to prepare highly conductive and flexible reduced graphene oxide (rGO) paper with hierarchical porous structures. When used as an electrode for a capacitor, these porous carbon layers demonstrate an enhanced electrochemical performance due to their large ion-accessible surface area and efficient electrolyte-ion transport pathways. The porous rGO electrode delivers a specific capacity of 173.5 F g−1, almost 1.8 times higher than 95.1 F g−1 of packed rGO. More importantly, the porous electrode also exhibits a good electrochemical performance with an energy density of 28.5 W h kg−1 and power density of 4000 W kg−1, as well as excellent cycling stability with 101.5% of its initial capacitance after 2000 charge–discharge cycles at a current density of 5 A g−1.

Graphical abstract: Porous reduced graphene oxide paper as a binder-free electrode for high-performance supercapacitors

Article information

Article type
Paper
Submitted
02 Mar 2015
Accepted
10 Mar 2015
First published
10 Mar 2015

RSC Adv., 2015,5, 27175-27180

Porous reduced graphene oxide paper as a binder-free electrode for high-performance supercapacitors

Y. Liu, Y. Ying, Y. Mao, P. Hu and X. Peng, RSC Adv., 2015, 5, 27175 DOI: 10.1039/C5RA03717D

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