ABSTRACT

Ionic liquids are room-temperature molten salts, composed mostly

of organic ions that may undergo almost unlimited structural

variations. They are currently under intense examination as poten-

tial electrolytes for future electrochemical systems [Armand et al. (2009)], as they present a number of highly appropriate properties

such as low vapor pressure, low combustibility, high thermal stabil-

ity, good ionic conductivity, and wide electrochemical windows. In

particular, it is worth underlining the case of electrical double-layer

capacitors (EDLCs), which have attracted much attention in recent

years [Simon and Gogotsi (2008)]. The discovery of nanoporous

electrode materials with enhanced performances when using an

ionic liquid with ion sizes matching the pore size opens the way for

a widespread use of supercapacitors in many contexts in which high

power electrical output is required [Miller and Simon (2008)].