Mechanically robust, thermally stable, bio-sourced and flexible eutectogel electrolytes for MXene-based symmetric supercapacitors

Environmentally benign and novel quasi-solid-state gel electrolytes comprising gelatin and an eco-friendly deep eutectic solvent (DES) or DES–water mixtures (water content ∼20 wt% and ∼50 wt%) have been prepared and characterized.