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

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

doi:10.1021/acsaem.1c02075

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 journal › Article › peer-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 language	English
Journal	ACS Applied Energy Materials
DOIs	https://doi.org/10.1021/acsaem.1c02075
State	Accepted/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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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.",

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AU - Aurbach, Doron

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AB - 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.

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

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