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High voltage graphene supercapacitor

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Description

10 V electrochemical capacitor with graphene electrodes – it is a new type of capacitor. Much faster than supercapacitors and more energy dense than dielectric capacitors.

The video describes the method published in Journal of Power Sources http://www.sciencedirect.com/science/article/pii/S037877531500169X
Dicyanamide-based ionic liquid electropolymerizes at positive voltages, forming a protective dielectric layer on carbon electrodes. Reduced graphene oxide was used as the electrode material.

Second paper describes similar effect with tetracyanoborate-based ionic liquids. EMImTCB can be used as a safe supercapacitor/battery electrolyte as overvoltage causes passivation of cathode.
http://dx.doi.org/10.1016/j.elecom.2016.11.016

A whole new family of nitrile-based dielectric polymers were discovered.
https://www.google.com/patents/WO2016050761A1?cl=en

The molecular animation can be accessed here (needs flash)
http://chemicum.com/zoo/high_voltage_capacitor.html

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