Zincophilic Hydrogen-Bonded Organic Frameworks with Vertical Channels Enabling Fast Ion-Transport Kinetics and Interface Stability toward Ultrastable Zn Anodes

IF 9.1 1区材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Nano Letters Pub Date : 2025-08-19 DOI:10.1021/acs.nanolett.5c03302

Mengqi Zhu*, Xuran Li, Jinyan Zhong, Meiling Zhong, Linlan Huang and Jindan Zhang*,

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Abstract

Although aqueous zinc-ion batteries have undergone remarkable development due to their various advantages, the key zinc anode component is still hindered by severe challenges. Herein, a fast ion transport, zincophilic, and mechanically robust hydrogen-bonded organic framework (HOF) protective layer is developed on Zn metals, achieving ultrastable zinc anodes (HOF@Zn). This HOF layer exhibits oriented channels for fast Zn ion transport toward the anode interface, eliminating the concentration gradient of Zn ions. Zincophilic sites of HOFs inhibit the solvation of zinc ions, promoting their reaction kinetics and suppressing side reactions of the Zn anode. Moreover, the HOF layer reveals high mechanical stability to maintain continuous protection. Consequently, HOF@Zn exhibits surprising performances, including high Zn deposition/stripping reversibility and superior cycling stability. Even under demanding conditions (40 mA cm^–2/40 mAh cm^–2), HOF@Zn still shows a long cycle life (2577 h) and a cumulative cycle capacity (103 Ah cm^–2).

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具有垂直通道的亲锌氢键有机框架，可实现超稳定锌阳极的快速离子传输动力学和界面稳定性。

尽管水性锌离子电池由于其各种优点而取得了显著的发展，但关键的锌阳极组件仍然面临严峻的挑战。本文在锌金属上开发了一种快速离子传输、亲锌性和机械坚固的氢键有机框架（HOF）保护层，实现了超稳定的锌阳极（HOF@Zn）。该HOF层具有向阳极界面快速传输Zn离子的定向通道，消除了Zn离子的浓度梯度。hof的亲锌位点抑制锌离子的溶剂化，促进锌离子的反应动力学，抑制锌阳极的副反应。此外，HOF层显示出高的机械稳定性，以保持持续的保护。因此，HOF@Zn表现出令人惊讶的性能，包括高Zn沉积/剥离可逆性和优越的循环稳定性。即使在苛刻的条件下（40 mA cm-2/40 mAh cm-2）， HOF@Zn仍然显示出较长的循环寿命（2577小时）和累积循环容量（103 Ah cm-2）。

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

Nano Letters 工程技术-材料科学：综合

CiteScore

16.80

自引率

2.80%

发文量

1182

审稿时长

1.4 months

期刊介绍： Nano Letters serves as a dynamic platform for promptly disseminating original results in fundamental, applied, and emerging research across all facets of nanoscience and nanotechnology. A pivotal criterion for inclusion within Nano Letters is the convergence of at least two different areas or disciplines, ensuring a rich interdisciplinary scope. The journal is dedicated to fostering exploration in diverse areas, including: - Experimental and theoretical findings on physical, chemical, and biological phenomena at the nanoscale - Synthesis, characterization, and processing of organic, inorganic, polymer, and hybrid nanomaterials through physical, chemical, and biological methodologies - Modeling and simulation of synthetic, assembly, and interaction processes - Realization of integrated nanostructures and nano-engineered devices exhibiting advanced performance - Applications of nanoscale materials in living and environmental systems Nano Letters is committed to advancing and showcasing groundbreaking research that intersects various domains, fostering innovation and collaboration in the ever-evolving field of nanoscience and nanotechnology.