Rechargeable aqueous zinc–iodine batteries: pore confining mechanism and flexible device application

Abstract

Here we report a flexible and rechargeable aqueous Zn–iodine battery with an iodine/carbon cloth cathode. Combined experimental and computational studies suggest that the battery undergoes a reversible reaction of Zn + I₂ ↔ ZnI₂ with suppressed I₃⁻ formation by confining iodine species in porous carbon.