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<p>Achieving Zn anode stability is critical for advancing commercialization of aqueous zinc-ion batteries. However, the instability of zinc metal anodes driven by dendritic growth, hydrogen evolution, and interfacial passivation remains a critical obstacle for advancing aqueous zinc-ion batteries. In this paper, we report a synergistic interfacial engineering strategy that integrates in situ-grown zincophilic copper nanorod arrays with a self-assembled layer of 1-dodecanethiol to regulate ion flux and suppress side reactions simultaneously. The water-poor electric double-layer microenvironment derived from this dual-function “zincophilic–hydrophobic” architecture (denoted as HS-Cu@Zn) promotes uniform Zn deposition along the (100) plane, enhances desolvation kinetics (Zn<sup>2</sup><sup>+</sup> transference number increased from 0.47 to 0.75), and effectively excludes electroactive water molecules from the anode surface. As a result, the symmetric cells exhibit ultra-long cycling stability over 3500 h at 1&#xa0;mA&#xa0;cm<sup>−2</sup>, while Zn||Cu half-cells maintain a Coulombic efficiency of 99.65% for 900 cycles. ZnVO||HS-Cu@Zn full cell demonstrates exceptional cycling stability, achieving 2000 stable cycles at 5&#xa0;A&#xa0;g<sup>−1</sup> with an average Coulombic efficiency of 99.8%.</p>

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Zincophilic–Hydrophobic Interface Design for Dendrite-Free Aqueous Zinc-Ion Batteries

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年4月9日

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  • Yinfeng Guo,
  • Yuxiang Xu,
  • Yaduo Jia,
  • Xiaoqing Zhu,
  • Tao Zhang,
  • Jia Zhang,
  • Changyong Chase Cao,
  • Qilin Gu,
  • Guiyin Xu

摘要

Achieving Zn anode stability is critical for advancing commercialization of aqueous zinc-ion batteries. However, the instability of zinc metal anodes driven by dendritic growth, hydrogen evolution, and interfacial passivation remains a critical obstacle for advancing aqueous zinc-ion batteries. In this paper, we report a synergistic interfacial engineering strategy that integrates in situ-grown zincophilic copper nanorod arrays with a self-assembled layer of 1-dodecanethiol to regulate ion flux and suppress side reactions simultaneously. The water-poor electric double-layer microenvironment derived from this dual-function “zincophilic–hydrophobic” architecture (denoted as HS-Cu@Zn) promotes uniform Zn deposition along the (100) plane, enhances desolvation kinetics (Zn2+ transference number increased from 0.47 to 0.75), and effectively excludes electroactive water molecules from the anode surface. As a result, the symmetric cells exhibit ultra-long cycling stability over 3500 h at 1 mA cm−2, while Zn||Cu half-cells maintain a Coulombic efficiency of 99.65% for 900 cycles. ZnVO||HS-Cu@Zn full cell demonstrates exceptional cycling stability, achieving 2000 stable cycles at 5 A g−1 with an average Coulombic efficiency of 99.8%.