A novel electrolyte study on polyaniline aqueous zinc-ion battery

•This research is about polyaniline as the zinc-ion batteries cathode material.•This study uses a simple method to greatly improve the cycle life of the PANI/ZIBs.•This work provides solid data support for PANI/ZIBs electrolyte additive.•This experiment explored the feasibility of gelatin as a dendrite inhibitor.•This study explain how the exceeds charging voltage influence battery capacity.