Abstract

The present invention relates to a method for producing a graphene-based material useful for storing electrical energy for the incorporation thereof into electrochemical capacitors. The method comprises the synthesis of the graphene-based material that comprises 5 sub-steps: feeding, activation/exfoliation, micro-nano separation, nano-decanting and nano-extraction. After this graphene-based material has been obtained, the electrode is manufactured in a process which is made up of 4 sub-steps: mixing, film preparation, filling with the electrolyte, and electrode cutting process. In light of the fact that the reported results regarding the manufactured electrodes show better electrochemical performance than those disclosed in the prior art, it can be concluded that the technological solution presented, which proposes the use of graphene-based materials produced from forestry waste, is a low-cost and eco-friendly solution for use thereof in the construction of electrodes for electrochemical capacitors.