Dielectric morphology engineering: hydrogel electrolyte with balanced local electric field to enhance the migration number of zinc ions

Abstract

This work introduces PVA gel electrolytes incorporating different morphologies of BaTiO₃ fillers to homogenize zinc deposition via dielectric polarization. Nanoparticles form a uniform network, boosting ionic conductivity to 10.14 mS cm^-1 and enabling stable 800 h Zn||Zn cycling. It elucidates the coupling between filler morphology and electric field distribution, guiding dielectric filler design for zinc batteries.