N-doped porous reduced graphene oxide as an efficient electrode material for high performance flexible solid-state supercapacitor

TitleN-doped porous reduced graphene oxide as an efficient electrode material for high performance flexible solid-state supercapacitor
Publication TypeJournal Article
Year of Publication2017
AuthorsSingh, SK, Dhavale, VM, Boukherroub, R, Kurungot, S, Szunerits, S
JournalApplied Materials Today
Volume8
Pagination141-149
Date PublishedSEP
Type of ArticleArticle
AbstractSupercapacitors (SCs) are energy storage devices with an immense potential to resolve energy related issues. Being a low cost, durable and multifunctional material, graphene and its derivatives are the most promising candidates for SCs. Here, we report the synthesis of N-doped porous reduced graphene (N-pGr) and its use for the fabrication of all-solid-state supercapacitor (ASSC) device. The N-pGr exhibited a specific capacitance of 230 F g(-1) at 1 A g(-1) current density and good capacitance retention up to 88% even after 10,000 galvanostatic charge-discharge cycles recorded at 5 A g(-1) fabricated in a solid-state supercapacitor. The synergistic effect of the porosity and N-doping is believed to be the underlying principle for the improved charge storage ability when compared to other reports. Significantly, the porous nature of N-pGr contributes in increasing the electroactive surface area for the formation of electrical double layer as well as facilitating the faster movement of electrolyte ions inside the electrode network. N-doping is believed to change the electrical properties of the electrode material and also to participate in the pseudo-capacitance which helped to boost the overall capacitance of the fabricated device. The good capacitance retention provides the room for making robust flexible solid-state supercapacitor (FSSC) with the N-pGr material.
DOI10.1016/j.apmt.2016.10.002
Type of Journal (Indian or Foreign)Foreign
Impact Factor (IF)1.691
Divison category: 
Physical and Materials Chemistry