Biopolymeric hydrogel electrolytes obtained by using natural polysaccharide–poly(itaconic acid-co-2-hydroxyethyl methacrylate) in deep eutectic solvents for rechargeable Zn–air batteries

We present an affordable biohydrogel that can be used in zinc-air batteries. It's made of eco-friendly materials such as polysaccharides and poly(itaconic acid) and has excellent conductivity properties thanks to the use of deep eutectic solvents.