Skin-like quasi-solid-state electrolytes for spontaneous zinc-ion dehydration toward ultra-stable zinc–iodine batteries

A concept of the skin-like quasi-solid-state electrolyte (skin-QSSE) features an asymmetric structure composed of covalent organic framework (COF) nanolayers and aramid fiber hydrogel layers, advancing the development of long-life Zn–I 2 batteries.