Selectively etching-off the highly reactive (002) Zn facet enables highly efficient aqueous zinc-metal batteries

By selectively etching-off the chemically unstable (002) Zn facet, vertically aligned Zn pillars of etched Zn greatly suppress the formation of dendritic Zn and water induced byproducts, thus enabling AZMBs with high coulombic efficiencies and long lifespans.