The present invention refers to an electrolyte comprising a viologen compound or a salt or solvate thereof, wherein each of the nitrogen atoms of the viologen are substituted with one aryl group; wherein said aryl groups are equal or different; and wherein said aryl groups are optionally substituted. The present invention also relates to a redox flow battery comprising the electrolyte of the invention, to an energy storage and/or delivery system comprising said battery, to a method of storing and/or delivering electricity comprising said battery, to the use of said battery, to the use of an energy system comprising said battery and to the use of the use of the viologen compound or a salt or solvate thereof, wherein each of the nitrogen atoms of the viologen are substituted with one aryl group; wherein said aryl groups are equal or different; and wherein said aryl groups are optionally substituted as active species of an electrolyte.
Inventores: Rubén Rubio Presa, Edgar Ventosa Arbaizar, Roberto José Sanz Díez
Número de solicitud: EP24382687.2
Fecha de solicitud: 25/06/2024