A Si3N4-modified cellulose/glass fiber hybrid separator inhibiting zinc dendrites and cathode dissolution for aqueous zinc-ion batteries†

Abstract

A sandwich-structured separator with Si₃N₄-modified cellulose nanofiber layers on glass fiber is designed. The modified separator inhibits zinc dendrites through the zincophilicity of Si₃N₄ and cathode dissolution through weak interactions with VO₂⁺. Benefiting from this dual-functional design, the full cells exhibit excellent electrochemical performance at low current densities.