Integrating inorganic Zn-ion conductor with nanocellulose towards separator-free and long-life aqueous zinc ion batteries.

IF 9.7 1区 化学 Q1 CHEMISTRY, PHYSICAL
Journal of Colloid and Interface Science Pub Date : 2026-01-01 Epub Date: 2025-08-06 DOI:10.1016/j.jcis.2025.138635
Jingxuan Yu, Minfeng Chen, Hong Ma, Wenhui Liu, Qinghua Tian, Jizhang Chen
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引用次数: 0

Abstract

Aqueous zinc-ion batteries (AZIBs) have emerged as a promising energy storage system due to their inherent safety, cost-effectiveness, large power density, and environmental sustainability. However, the widespread adoption of AZIBs is impeded by critical challenges associated with zinc anodes, including uncontrolled dendrite growth, hydrogen evolution, and corrosion, as well as the reliance on thick separators that reduce the battery's energy density. To overcome these limitations, this study introduces a separator-free AZIB design featuring a multifunctional protective coating composed of zinc monofluorophosphate and nanocellulose on the Zn electrode. The hybrid coating with a low thickness of 15 μm serves a dual purpose, not only mitigating dendrite formation and parasitic reactions but also eliminating the need for conventional separators. The electrochemical characterization reveals that the hybrid coating enables superior corrosion resistance, extended electrochemical stability window, improved Zn2+ ion transport, facilitated desolvation process, lowered overpotential, and uniformized Zn deposition. Thanks to these benefits, the Zn//Zn cell offers a long life span up to 1200 h at 10 mA cm-2 and 2 mAh cm-2, and the full battery delivers great rate capability and cycling stability even under a low negative-to-positive capacity ratio. This work provides an appropriate solution to the development of high-energy-density and durable AZIBs.

无机锌离子导体与纳米纤维素相结合制备无分离器长寿命水性锌离子电池。
水性锌离子电池(azib)由于其固有的安全性、成本效益、大功率密度和环境可持续性而成为一种有前途的储能系统。然而,azib的广泛采用受到锌阳极相关的关键挑战的阻碍,包括不受控制的枝晶生长、析氢和腐蚀,以及对降低电池能量密度的厚隔板的依赖。为了克服这些限制,本研究引入了一种无分离器的AZIB设计,其特点是在锌电极上具有由单氟磷酸锌和纳米纤维素组成的多功能保护涂层。这种厚度为15 μm的混合涂层具有双重用途,不仅可以减少枝晶的形成和寄生反应,还可以消除对传统分离器的需求。电化学表征表明,杂化涂层具有优异的耐腐蚀性,延长了电化学稳定窗口,改善了Zn2+离子的传输,促进了脱溶过程,降低了过电位,使锌沉积均匀。由于这些优点,Zn//Zn电池在10 mA cm-2和2 mAh cm-2下可提供长达1200小时的长寿命,并且即使在低负极容量比下,全电池也能提供出色的倍率能力和循环稳定性。这项工作为开发高能量密度和耐用的azib提供了合适的解决方案。
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
CiteScore
16.10
自引率
7.10%
发文量
2568
审稿时长
2 months
期刊介绍: The Journal of Colloid and Interface Science publishes original research findings on the fundamental principles of colloid and interface science, as well as innovative applications in various fields. The criteria for publication include impact, quality, novelty, and originality. Emphasis: The journal emphasizes fundamental scientific innovation within the following categories: A.Colloidal Materials and Nanomaterials B.Soft Colloidal and Self-Assembly Systems C.Adsorption, Catalysis, and Electrochemistry D.Interfacial Processes, Capillarity, and Wetting E.Biomaterials and Nanomedicine F.Energy Conversion and Storage, and Environmental Technologies
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