Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6606686 | Electrochimica Acta | 2016 | 30 Pages |
Abstract
High-performance reduced graphene oxide/nickel foam (rGO/NF) composite electrodes for high-performance supercapacitors were prepared by flame-induced reduction of dry graphene oxide (GO) coated on nickel foam. Flame reduction of GO is a facile, feasible and cost-effective reduction technique, which is conducted without the need of any reductant. Most importantly, the rGO obtained by flame reduction showed a typical disordered cross-linking network and randomly distributed pores, which provide accessible routes for fast transportation of ions. It was demonstrated that the rGO/NF electrode with embedded current collector (NF) exhibited better electrochemical performance than conventional rGO film counterparts, including a high gravimetric specific capacitance of 228.6Â FÂ gâ1 at a current density of 1Â AÂ gâ1, excellent rate capability (over 81% retention at 32Â AÂ gâ1) and high cycling stability with only 5.3% capacitance decay over 10,000 cycles of cyclic voltammetry at a ultrahigh scan rate of 1000Â mVÂ sâ1. This facile method for the fabrication of rGO/NF electrodes could envision enormous potential for high performance energy storage devices.
Keywords
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Chemical Engineering (General)
Authors
Jizhen Zhang, Wenrong Yang, Jingquan Liu,