Dendrite-free zinc anodes enabled by exploring polar-face-rich 2D ZnO interfacial layers for rechargeable Zn-ion batteries
Author(s)
Type
Journal Article
Abstract
Zinc metal is a promising candidate for anodes in zinc-ion batteries (ZIBs), but its widespread implementation is hindered by dendrite growth in aqueous electrolytes. Dendrites lead to undesirable side reactions, such as hydrogen evolution, passivation, and corrosion, causing reduced capacity during prolonged cycling. In this study, an approach is explored to address this challenge by directly growing 1D zinc oxide (ZnO) nanorods (NRs) and 2D ZnO nanoflakes (NFs) on Zn anodes, forming artificial layers to enhance ZIB performance. The incorporation of ZnO on the anode offers both chemical and thermal stability and leverages its n-type semiconductor nature to facilitate the formation of ohmic contacts. This results in efficient electron transport during Zn ion plating and stripping processes. Consequently, the ZnO NFs-coated Zn anodes demonstrate significantly improved charge storage performance, achieving 348 mAh g-1 , as compared to ZnO NRs (250 mAh g-1 ) and pristine Zn (160 mAh g-1 ) anodes when evaluated in full cells with V2 O5 cathodes. One significant advantage of ZnO NFs lies in their highly polar surfaces, promoting strong interactions with water molecules and rendering them exceptionally hydrophilic. This characteristic enhances the ability of ZnO NFs to desolvate Zn2+ ions, leading to improved charge storage performance.
Date Issued
2024-05-02
Date Acceptance
2023-12-01
Citation
Small, 2024, 20 (18)
ISSN
1613-6810
Publisher
Wiley
Journal / Book Title
Small
Volume
20
Issue
18
Copyright Statement
© 2023 The Authors. Small published by Wiley-VCH GmbH
This is an open access article under the terms of the Creative Commons Attribution-NonCommercial License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes.
This is an open access article under the terms of the Creative Commons Attribution-NonCommercial License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes.
License URL
Identifier
https://www.ncbi.nlm.nih.gov/pubmed/38054756
Subjects
dendrite
hydrophilicity
zinc anodes
zinc oxide
zinc-ion batteries
Publication Status
Published
Coverage Spatial
Germany
Article Number
2306827
Date Publish Online
2023-12-06