title: The influence of pore size and surface area of activated carbons on the performance of ionic liquid based supercapacitors.
abstract: This study analyses and compares the behaviour of 5 commercial porous carbons in the ionic liquid N-butyl-N-methylpyrrolidinium bis(trifluoromethanesulfonyl)imide (PYR14TFSI) and its mixture with propylene carbonate (PC) as electrolytes. The results of this investigation show that the existence of a distribution of pore sizes and/or constrictions at the entrance of the pores leads to significant changes in the specific capacitance of the investigated materials. The use of PYR14TFSI as an electrolyte has a positive effect on the EDLC energy storage, but its high viscosity limits the power density. The mixture 50 : 50 wt% propylene carbonate-PYR14TFSI provides high operative voltage as well as low viscosity and thus notably enhances EDLC operation.
authors.affiliation: Westfälische Wilhelms-Universität, Institut für Physikalische Chemie-MEET, Corrensstr. 28/30, 48149 Münster, Germany. andrea.balducci@uni-muenster.de.
authors.forename: Sebastian
authors.initials: S
authors.lastname: Pohlmann
authors.forename: Belén
authors.initials: B
authors.lastname: Lobato
authors.forename: Teresa A
authors.initials: TA
authors.lastname: Centeno
authors.forename: Andrea
authors.initials: A
authors.lastname: Balducci