In-Situ Integration of a Hydrophobic and Fast-Zn -Conductive Inorganic Interphase to Stabilize Zn Metal Anodes.

The irreversible issues of Zn anode stemming from dendrite growth and water-induced erosion have severely hindered the commercialization of rechargeable aqueous Zn batteries. Herein, a hydrophobic and fast-Zn -conductive zinc hexacyanoferrate (HB-ZnHCF) interphase layer is in situ integrated on Zn by a rapid room-temperature wet-chemistry method to address these dilemmas. Different from currently proposed hydrophilic inorganic cases, the hydrophobic and compact HB-ZnHCF interphase effectively prevents the access of water molecules to Zn surface, thus avoiding H evolution and Zn corrosion.

Non-flammable, dilute, and hydrous organic electrolytes for reversible Zn batteries.

Rechargeable Zn batteries hold great practicability for cost-effective sustainable energy storage but suffer from irreversibility of the Zn anode in aqueous electrolytes due to parasitic H evolution, corrosion, and dendrite growth. Herein, we report a non-flammable, dilute, and hydrous organic electrolyte by dissolving low-cost hydrated Zn(ClO)·6HO in trimethyl phosphate (TMP), which homogenizes plating/stripping and enables formation of a Zn(PO)-ZnCl-rich interphase to stabilize the Zn anode. A dilute 0.