Integrating zinc iodine battery with zinc hybrid capacitor in one cell

Abstract The rapid development of flexible wearable electronics and new energy harvesting technologies desire efficient energy storage devices with high safety. Here, we investigate a flexible thin-film device integrating two electrochemical systems: zinc iodine battery and zinc hybrid capacitor. Compared with symmetric supercapacitors devices, both capacity and shelf-life are improved. The integrated device demonstrated an optimized capacity of 0.26 mAh/cm 2 .