Synergistic Effect of Cation and Anion for Low-Temperature Aqueous Zinc-Ion Battery.

ABSTRACT: Although aqueous zinc-ion batteries have gained great development due to their many merits, the frozen aqueous electrolyte hinders their practical application at low temperature conditions. Here, the synergistic effect of cation and anion to break the hydrogen-bonds network of original water molecules is demonstrated by multi-perspective characterization. Then, an aqueous-salt hydrates deep eutectic solvent of 3.5 M Mg(ClO₄)₂ + 1 M Zn(ClO₄)₂ is proposed and displays an ultralow freezing point of - 121 °C. A high ionic conductivity of 1.41 mS cm^-1 and low viscosity of 22.9 mPa s at - 70 °C imply a fast ions transport behavior of this electrolyte. With the benefits of the low-temperature electrolyte, the fabricated Zn||Pyrene-4,5,9,10-te

SUBMITTER: Sun T 

PROVIDER: S-EPMC8501177 | biostudies-literature | 2021 Oct

REPOSITORIES: biostudies-literature