Multifold Electrochemical Protons and Zinc Ion Storage Behavior in Copper Vanadate Cathodes

Munseok S. Chae, Ran Attias, Ben Dlugatch, Yosef Gofer, Doron Aurbach

Research output: Contribution to journalArticlepeer-review

Abstract

Zinc-based batteries are gaining attention as a promising candidate for large-scale energy storage systems due to their safety, abundance of elemental zinc, low cost, and ease of handling in air. However, only a few zinc storage materials, namely, intercalation cathode materials, were reported, and there is a need to develop host structures with improved performance. Here, we investigate copper vanadate as a cathode material and uncover its proton and zinc storage behavior by combined electrochemical characterization, XRD analysis, and ion migration barrier calculations for the cation diffusion pathways. The material showed a highly reversible capacity of μ315 mA h/g at 20 mA/g with a good capacity retention.

Original languageEnglish
JournalACS Applied Energy Materials
DOIs
StateAccepted/In press - 2021

Bibliographical note

Funding Information:
This work was partially supported by the Ministry of Energy and by the Israel Ministry of Science and Technology.

Publisher Copyright:
© 2021 American Chemical Society.

Keywords

  • aqueous electrolyte solutions
  • aqueous zinc-ion batteries
  • co-intercalation
  • copper vanadate
  • saturated electrolytes

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