In-situ positive electrode-electrolyte interphase construction enables stable Ah-level Zn-MnO batteries.

Engineering the formulation of an Mn-based positive electrode is a viable strategy for producing an efficient aqueous zinc-ion battery. However, Mn dissolution and the byproducts result in capacity fading, thus limiting its electrochemical performances. To solve the undesirable issues, the concept of in-situ forming the positive electrode/electrolyte interface on the commercial MnO is designed, with the help of introducing the Dioctyl Phthalate into the ZS-based electrolyte (2 M ZnSO + 0.