A process to enhance the specific surface area and capacitance of hydrothermally reduced graphene oxide
El Tall, Omar
Hedhili, Mohamed N.
Patole, Shashikant P.
Da Costa, Pedro M. F. J.
KAUST DepartmentPhysical Sciences and Engineering (PSE) Division
Analytical Core Lab
Imaging and Characterization Core Lab
KAUST Grant NumberBAS/1/1346-01-01
Permanent link to this recordhttp://hdl.handle.net/10754/622369
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AbstractThe impact of post-synthesis processing in reduced graphene oxide materials for supercapacitor electrodes has been analyzed. A comparative study of vacuum, freeze and critical point drying was carried out for hydrothermally reduced graphene oxide demonstrating that the optimization of the specific surface area and preservation of the porous network are critical to maximize its supercapacitance performance. As described below, using a supercritical fluid as the drying medium, unprecedented values of the specific surface area (364 m2 g−1) and supercapacitance (441 F g−1) for this class of materials have been achieved.
CitationAlazmi A, El Tall O, Rasul S, Hedhili MN, Patole SP, et al. (2016) A process to enhance the specific surface area and capacitance of hydrothermally reduced graphene oxide. Nanoscale 8: 17782–17787. Available: http://dx.doi.org/10.1039/c6nr04426c.
SponsorsThe authors are thankful for financial support from KAUST (BAS/1/1346-01-01).
PublisherRoyal Society of Chemistry (RSC)