A method for making an electrode for an ionic liquid-based supercapacitor comprising two electrodes (anode, cathode) separated by an ionic polymer electrolyte separator, comprising:

  • a step for making a carbon paste resulting from mixing carbon materials, ionic liquids and a binder, so as to obtain an active material for the electrode at room temperature, and
  • a step for forming the electrode from mechanically processing the active material.

A supercapacitor comprising a stack of a cathode electrode, an electrolyte separator and an anode electrode, the cathode and anode electrodes being electrically connected to current collectors, wherein the electrolyte separator comprises a polymer with an ionic liquid and the electrodes comprise a carbon-based active material mixed with an ionic liquid electrolyte and a binder.

Patent family WO2022136810 : 24/12/2020

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