Intrinsic Interfacial Dynamic Engineering of Zincophilic Microbrushes via Regulating Zn Deposition for Highly Reversible Aqueous Zinc Ion Battery,Advanced Materials

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Intrinsic Interfacial Dynamic Engineering of Zincophilic Microbrushes via Regulating Zn Deposition for Highly Reversible Aqueous Zinc Ion Battery
Advanced Materials ( IF 27.4 ) Pub Date : 2022-12-01 , DOI: 10.1002/adma.202205206
Tieqi Huang ₁ , Kui Xu ₂ , Ning Jia ₃ , Lan Yang ₃ , Hongtao Liu ₁ , Jixin Zhu ₄ , Qingyu Yan _{3,

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Affiliation

Aqueous rechargeable zinc ion batteries are promising efficient energy storage systems due to remarkable safety and satisfactory capacity. However, zinc metal anode instability including dendrite growth and side reactions severely hinders widespread applications. Herein, zincophilic microbrushes have been in situ anchored on zinc plates through simple freeze-drying and mild reduction of graphene oxide, successfully overcoming these thorny issues. By introducing suitable oxygen-containing groups, the microbrushes exhibit a good affinity for zinc ions, thereby providing sufficient depositing sites, promoting zinc plating and stripping during cycling, and suppressing side reactions. The delicate zincophilic microbrushes can not only function as protective layer to guide the deposition of zinc ions, but also act as high-speed pathways to redistribute the zinc ion flux for rapid kinetics. Consequently, the microbrushes-covered zinc anode displays long lifespan and good durability, whenever in symmetric cell or full battery tests. This work paves a feasible bridge to design advanced aqueous anodes by architecting both structures and compositions of metal coverings.

中文翻译：

通过调节锌沉积的亲锌微刷的本征界面动态工程用于高度可逆的水性锌离子电池

由于卓越的安全性和令人满意的容量，水系可充电锌离子电池是有前途的高效储能系统。然而，锌金属阳极的不稳定性（包括枝晶生长和副反应）严重阻碍了其广泛应用。在这里，通过简单的冷冻干燥和氧化石墨烯的温和还原，亲锌微刷被原位固定在锌板上，成功地克服了这些棘手的问题。通过引入合适的含氧基团，微刷对锌离子表现出良好的亲和力，从而提供足够的沉积位点，促进循环过程中的镀锌和剥离，抑制副反应。细腻的亲锌微刷不仅可以起到保护层的作用，引导锌离子的沉积，但也作为高速通路重新分配锌离子通量以实现快速动力学。因此，无论是在对称电池还是全电池测试中，微刷覆盖的锌阳极都显示出较长的使用寿命和良好的耐用性。这项工作通过构建金属覆盖层的结构和成分，为设计先进的水性阳极铺平了一条可行的桥梁。

更新日期：2022-12-01

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