A thin flexible zinc battery enabled by simultaneously electro-depositing both electrodes in acetate electrolytes

Abstract Electrolytic batteries with the anode or cathode formed by electro-deposition from the electrolytes show promising potential for simplifying the fabrication process of flexible and micro-size rechargeable batteries. Thin flexible zinc batteries with both anode and cathode electro-deposited simultaneously are demonstrated and investigated here. We find that the acetate anions (Ac - ) show excellent electro-depositing efficiency for manganese oxide cathodes, which enable a capacity of 0.26 mAh/cm 2 with only carbon current collectors and electrolytes.