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

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.