title: A process to enhance the specific surface area and capacitance of hydrothermally reduced graphene oxide.
abstract: The 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 m2g-1) and supercapacitance (441 F g-1) for this class of materials have been achieved.
authors.affiliation: King Abdullah University of Science and Technology (KAUST), Physical Science and Engineering Division, Thuwal 23955-6900, Saudi Arabia. pedro.dacosta@kaust.edu.sa.
authors.forename: Amira
authors.initials: A
authors.lastname: Alazmi
authors.affiliation: King Abdullah University of Science and Technology (KAUST), Analytical Core Laboratory, Thuwal 23955-6900, Saudi Arabia.
authors.forename: Omar
authors.initials: O
authors.lastname: El Tall
authors.affiliation: King Abdullah University of Science and Technology (KAUST), Physical Science and Engineering Division, Thuwal 23955-6900, Saudi Arabia. pedro.dacosta@kaust.edu.sa.
authors.forename: Shahid
authors.initials: S
authors.lastname: Rasul
authors.affiliation: King Abdullah University of Science and Technology (KAUST), Imaging and Characterization Laboratory, Thuwal 23955-6900, Saudi Arabia.
authors.forename: Mohamed N
authors.initials: MN
authors.lastname: Hedhili
authors.affiliation: King Abdullah University of Science and Technology (KAUST), Physical Science and Engineering Division, Thuwal 23955-6900, Saudi Arabia. pedro.dacosta@kaust.edu.sa.
authors.forename: Shashikant P
authors.initials: SP
authors.lastname: Patole
authors.affiliation: King Abdullah University of Science and Technology (KAUST), Physical Science and Engineering Division, Thuwal 23955-6900, Saudi Arabia. pedro.dacosta@kaust.edu.sa.
authors.forename: Pedro M F J
authors.initials: PM
authors.lastname: Costa