In-situ construction of epitaxial phase for boosting zinc nucleation on three-dimensional interface

IF 4.8 2区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Progress in Natural Science: Materials International Pub Date : 2024-06-01 DOI:10.1016/j.pnsc.2024.05.002

Xin He , Zhe Zhu , Xiaoqiao Liao , Kai Yang , Yixue Duan , Linfeng Lv , Chuan Zhao , Wei Zhao , Jibing Chen , Peng Tian , Xiaoyu Liu , Liang He

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Abstract

Interface modification of zinc (Zn) metal anode with conductive three-dimensional (3D) structure is widely utilized in zinc ion batteries. However, the uniformity of zinc nucleation on surface microstructure is rarely investigated which exacerbates the tip effect and raises unstable risk. Herein, a strategy via the initial copper (Cu) alloying and following sulfurization treatment is reported to accomplish boosted uniform nucleation of zinc on the modified layer with dense microstructures. This epitaxial sulfide phase not only improves the wetting area to revitalize the microstructural surface, but also forms a bifunctional zincophilic Cu₂S/CuZn alloy interface layer, which combines the merits of guided local ions diffusion and improved zinc nucleation environment. As a result, a homogeneous growth of zinc on the 3D structural substrate can be realized, and cycling stability of the achieved Cu₂S/CuZn electrode with a practical capacity of 1 mAh cm⁻² under 1 mA cm⁻² or amplified current density of 10 mA cm⁻² is significantly enhanced. This work provides an epitaxial strategy in constructing a bifunctional zincophilic interface layer for boosting zinc nucleation, and offers a new perspective on the modification of 3D surface structure for stabilization of zinc anode.

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原位构建外延相，促进锌在三维界面上成核

具有导电三维（3D）结构的锌（Zn）金属阳极的界面改性在锌离子电池中得到了广泛应用。然而，人们很少研究锌在表面微结构上成核的均匀性，这加剧了尖端效应并提高了不稳定风险。本文报告了一种通过最初的铜（Cu）合金化和随后的硫化处理实现锌在具有致密微结构的改性层上均匀成核的策略。这种硫化物外延相不仅提高了润湿面积以活化微结构表面，还形成了亲锌的 Cu2S/CuZn 合金双功能界面层，兼具引导局部离子扩散和改善锌成核环境的优点。因此，锌可以在三维结构基底上均匀生长，并显著提高了所制备的 Cu2S/CuZn 电极的循环稳定性，在 1 mA cm-2 或 10 mA cm-2 放大电流密度下的实际容量为 1 mAh cm-2。这项工作为构建双功能亲锌界面层以促进锌成核提供了一种外延策略，并为改变三维表面结构以稳定锌阳极提供了一个新的视角。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Progress in Natural Science: Materials International 综合性期刊-综合性期刊

CiteScore

8.60

自引率

2.10%

发文量

2812

审稿时长

49 days

期刊介绍： Progress in Natural Science: Materials International provides scientists and engineers throughout the world with a central vehicle for the exchange and dissemination of basic theoretical studies and applied research of advanced materials. The emphasis is placed on original research, both analytical and experimental, which is of permanent interest to engineers and scientists, covering all aspects of new materials and technologies, such as, energy and environmental materials; advanced structural materials; advanced transportation materials, functional and electronic materials; nano-scale and amorphous materials; health and biological materials; materials modeling and simulation; materials characterization; and so on. The latest research achievements and innovative papers in basic theoretical studies and applied research of material science will be carefully selected and promptly reported. Thus, the aim of this Journal is to serve the global materials science and technology community with the latest research findings. As a service to readers, an international bibliography of recent publications in advanced materials is published bimonthly.