Enabling Stable Aqueous Zn Metal Anodes by Scandium Acetate Electrolyte Additives The potential of zinc metal anode (ZMA) in emerging aqueous electrochemical devices like rechargeable zinc-ion batteries and hybrid capacitors is substantial, owing to its high theoretical capacity, low redox potential, non-toxicity, abundant availability, and cost-effectiveness. However, the practical application of ZMA faces limitations due to issues such as uncontrolled zinc dendrites growth and side reactions.