The Polymer Society of Korea

Abstract

Aqueous Zn metal batteries are very attractive owing to their high theoretical capacity, natural abundance, and high safety. However, the practical application of aqueous Zn metal batteries are deteriorated due to Zn dendrite formation and corrosion, and gas evolution. In this talk, I will introduce two kinds of organic/aqueous hybrid electrolytes for reversible Zn and Al deposition of Zn metal and Zn-Al alloy anodes. Computational and experimental results correlate the solvated structure and interfacial chemistry of two hybrid electrolytes with facile and stable Zn- and Al-ion plating/stripping behaviour occurring on the surface of Zn metal and Zn-Al alloy anodes. I will also address multifunctional electrolyte additives based on stereoisomers that can modulate interfacial and solvated structures as well as form a robust and uniform SEIs for anodeless Zn metal batteries. Finally, divalent and halide dual-ion storage materials as a cathode candidate will be introduced for an energy-dense aqueous divalent metal-halogen battery and beyond for sustainable wastewater- energy nexus.