Hydrated hybrid vanadium oxide nanowires as the superior cathode for aqueous Zn battery

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review

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Detail(s)

Original languageEnglish
Article number100361
Journal / PublicationMaterials Today Energy
Volume14
Online published13 Nov 2019
Publication statusPublished - Dec 2019

Abstract

Zinc batteries are at the forefront of aqueous energy storage due to their intrinsic safety and low cost. Various vanadium oxides stand out among the few cathode candidates. Herein, we demonstrate a new heterogeneous vanadium oxide nanowire with V2O5·nH2O shell and V3O7·H2O core, named h-VOW, as a promising cathode candidate for Zn batteries. Thanks to the synergies of multivalent states of vanadium elements associated with inherent high conductivity, in an aqueous electrolyte, h-VOW/Zn battery delivers high discharge capacity (455 mAh g−1 at 0.1 A g−1), energy density (340 Wh kg−1) and power density (9105 W kg−1). Moreover, the gel electrolyte imparts satisfied deformability and weather resistance to the flexible quasi-solid-state battery, allowing it to withstand extremely harsh conditions without catastrophic failure.

Research Area(s)

  • Aqueous battery, Cathode, V2O5, Zinc anode

Citation Format(s)