Nitrogen DC-pulse atmospheric-pressure-plasma jet (APPJ)-processed reduced graphene oxide (rGO)?carbon black (CB) nanocomposite electrodes for supercapacitor applications
Journal
Diamond & Related Materials
Journal Volume
88
Pages
10478
Date Issued
2018
Author(s)
Abstract
This study compares supercapacitors with reduced graphene oxide (rGO)‑carbon black (CB) and CB nanocomposite coated carbon cloth electrodes. We use a nitrogen DC-pulse atmospheric pressure plasma jet (APPJ) to process the electrodes. The APPJ processing time is <40 s. Nitrogen APPJ burns off organic binders to create nanoporous structures. Replacing part of the CB with rGO nano-flakes can increase the overall surface area to improve the supercapacitive performance. Specifically, by replacing 50 wt% of CBs with rGOs, the specific (areal) capacitance can be improved from 91.84 F·g−1 (19.74 mF/cm2) to 162.68 F·g−1 (29.16 mF/cm2), respectively, with 20 s APPJ processing time, as evaluated by cyclic voltammetry under a potential scan rate of 2 mV·s−1. The nitrogen DC-pulse APPJ is demonstrated to be an ultrafast and highly economical tool for efficiently processing nanocomposite electrodes of supercapacitors.
Type
journal article