I am trying to reproduce Kaner and El-Kadys Graphene based electrochemical capacitors (ECs). The process reduces Graphite-oxide (GO) to laser-scribed graphene (LSG) using a lightscribe. I think I have figured out a way to produce the graphite-oxide from watching a couple of great videos on youtube. My plan is to laser printer transparency film as a backing because it has been heat stabilized, and coat it with GO suspended in water and allow it to dry onto the film thereby leaving a film of GO. Then I will put this into the lightscribe. This should give me the electrodes needed for the LSG-ECs. I am struggling with which electrolyte to use and what seperator to use. From what I can gather Kaner's team used a couple of different electrolytes with different associated energy and power densities. In one iteration he produced an all solid state cell that used a polymer as both separator and electrolyte. From what I can tell he used the ionic liquid 1-ethyl-3-methylimidazolium tetrafluoroborate (EMIMBF4) to achieve his highest densities. Does anyone know if it is possible to make this ionic liquid at home or if there is a similar liquid that would achieve similar densities? I am also curious if anyone has any ideas on the separator to use, how to seal the entire cell, and how to attach each graphene electrode together in order to put them in series and in parallel. I know its a lot, but I would really like to reproduce these capacitors and put them to use. Thanks for your help!