Polarizable Additive with Intermediate Chelation Strength for Stable Aqueous Zinc-Ion Batteries.

ABSTRACT: Aqueous zinc-ion batteries are promising due to inherent safety, low cost, low toxicity, and high volumetric capacity. However, issues of dendrites and side reactions between zinc metal anode and the electrolyte need to be solved for extended storage and cycle life. Here, we proposed that an electrolyte additive with an intermediate chelation strength of zinc ion-strong enough to exclude water molecules from the zinc metal-electrolyte interface and not too strong to cause a significant energy barrier for zinc ion dissociation-can benefit the electrochemical stability by suppressing hydrogen evolution reaction, overpotential growth, and dendrite formation. Penta-sodium diethylene-triaminepentaacetic acid salt was selected for such a purpose. It has a suitable chelating ability in aqueous so

SUBMITTER: Xia Y 

PROVIDER: S-EPMC10786796 | biostudies-literature | 2024 Jan

REPOSITORIES: biostudies-literature