A novel electrolyte study on polyaniline aqueous zinc-ion battery

To effectively improve the organic polymer as zinc-ion batteries cathode material, the conductive polymer polyaniline was prepared by a cost-effective chemical synthesis method, which was used as the cathode material of the aqueous rechargeable zinc-ion battery. By a series of tests, the resulted showed that reasonable charging and discharging voltage range was 1.55–0.6 V. In this battery, 3.5 g L−1 gelatin was added as a zinc dendrite inhibitor, and 0.3 mol L−1 acetic acid/sodium acetate (Ac/NaAc) was used as a buffer solution can improve PANI/ZIBs performance to get capacity of 90 mAh g−1 and a cycle life of more than 700. In addition, the average coulombic efficiency of the battery can reach more than 98%.