Highly Stable Zn Metal Anodes Enabled by In2O3 Coating for High-Performance Flexible Aqueous Zinc-Ion Batteries

Flexible rechargeable aqueous zinc-ion batteries (AZIBs) are a highly promising energy storage device for flexible electronic devices. This paper proposes adding a layer of indium oxide (In2O3) thin film to the zinc anode (In2O3@Zn) as an interface modification, effectively addressing issues such as zinc dendrite formation and hydrogen evolution that are inherent in zinc-ion batteries. Compared to bare Zn batteries, the In2O3@Zn zinc-ion batteries show significant improvements in specific capacity and cycling stability.