Electric Field Regulator Constructed by Magnetron Sputtering for Dendrite‐Free and Stable Zinc Metal Anode

IF 18.5 1区材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Advanced Functional Materials Pub Date : 2024-09-23 DOI:10.1002/adfm.202413456

Mengxuan Sun, Qi Cheng, Xiaohe Ren, Nengze Wang, Lei Hu, Ziwei Gan, Yong Xiang, Zongkai Yan, Chunyang Jia, Zhijie Li

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Abstract

Rechargeable aqueous zinc‐ion batteries (AZIBs) are considered to be one of the most promising devices in the next generation of energy storage systems. However, the uncontrolled growth of Zn dendrites during electroplating leads to rapid battery failure, which hinders the wide application of AZIBs. In this work, an Fe metal interface (FMI) with electric field regulation is designed on the Zn metal anode using a magnetron sputtering technology. The FMI layer with nanosheet array not only uniforms the surface electric field, but also adjusts the surface Zn2+ ion distribution to inhibit 2D diffusion. The strong orientation relationships of the FMI layer enhance the reversibility of Zn plating/stripping, improving the structural stability of the interface layer. Consequently, FMI@Zn symmetric cell exhibits ultra‐stable lifespan for over 6000 h (Cumulative plated capacity, CPC = 15 Ah cm−2) with a low voltage hysteresis of 46.4 mV and high Coulombic efficiency of 99.8% at 5 mA cm−2. Even at the large current density of 40 mA cm−2, the CPC reaches 19.7 Ah cm−2. The proposed electric field regulation strategy reveals a promising prospect for designing highly stable Zn anode, which also applies to other metal anodes in energy storage systems.

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通过磁控溅射构建无树枝状晶粒且稳定的锌金属阳极的电场调节器

可充电锌离子水电池（AZIBs）被认为是下一代储能系统中最有前途的设备之一。然而，电镀过程中锌枝晶的不可控生长导致电池迅速失效，阻碍了 AZIB 的广泛应用。在这项研究中，利用磁控溅射技术在锌金属阳极上设计了具有电场调节功能的铁金属界面（FMI）。具有纳米片阵列的 FMI 层不仅能均匀表面电场，还能调节表面 Zn2+ 离子的分布以抑制二维扩散。FMI 层的强取向关系增强了 Zn 镀层/剥离的可逆性，提高了界面层的结构稳定性。因此，FMI@Zn 对称电池具有超过 6000 小时的超稳定寿命（累积电镀容量，CPC = 15 Ah cm-2），电压滞后低至 46.4 mV，在 5 mA cm-2 时库仑效率高达 99.8%。即使在 40 mA cm-2 的大电流密度下，CPC 也能达到 19.7 Ah cm-2。所提出的电场调节策略为设计高度稳定的锌阳极揭示了广阔的前景，同样适用于储能系统中的其他金属阳极。

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

Advanced Functional Materials 工程技术-材料科学：综合

CiteScore

29.50

自引率

4.20%

发文量

2086

审稿时长

2.1 months

期刊介绍： Firmly established as a top-tier materials science journal, Advanced Functional Materials reports breakthrough research in all aspects of materials science, including nanotechnology, chemistry, physics, and biology every week. Advanced Functional Materials is known for its rapid and fair peer review, quality content, and high impact, making it the first choice of the international materials science community.