Directing Zn Growth with Biased Adsorption of Straight-chain Molecules for Superior Zn Anode Stability

IF 16.1 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Angewandte Chemie International Edition Pub Date : 2024-12-10 DOI:10.1002/anie.202421787

Fangfang Wu, Junkang Zhang, Lu Ma, Pengchao Ruan, Yulong Chen, Shibo Meng, Ruilian Yin, Wenhui Shi, Wenxian Liu, Jiang Zhou, Xiehong Cao

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Abstract

Aqueous zinc ion batteries (AZIBs), which have attracted attentions in the field of energy storage, is affected by dendrites and side reactions of Zn anode, resulting in an unsatisfactory performance of AZIBs. Herein, we propose a biased adsorption strategy mediated by straight-chain molecule (Scm) for stabilizing Zn anode. The dual polar termini of Scms guaranties securely anchor themselves in a parallel orientation upon the Zn anode surface. This provides a comprehensive coverage, effectively sequestering water molecules from the Zn anode and precipitating the formation of a water-depleted electric double layer (EDL). Furthermore, the Scms selectively adsorb along the (002) crystallographic planes, guiding the deposition of Zn2+. Consequently, the incorporation of these Scms successfully mitigates anode corrosion, HER, and dendrites. The Zn||Zn, Zn||Cu and Zn||V6O13 cells with Scms display significantly enhanced electrochemical performance, especially at elevated temperature of 60 °C. This work highlights the potential of cost-effective, straight-chain electrolyte additives for enhancing Zn anode stability.

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利用直链分子的偏向吸附引导锌的生长，实现卓越的锌阳极稳定性

锌离子电池是目前储能领域备受关注的一种新型电池，其性能受到锌阳极枝晶和副反应的影响。在此，我们提出了一种由直链分子（Scm）介导的偏吸附策略来稳定Zn阳极。Scms的双极性末端保证了在锌阳极表面上以平行方向安全地锚定自己。这提供了一个全面的覆盖，有效地隔离了锌阳极的水分子，并沉淀形成了一个耗水的双电层（EDL）。此外，Scms选择性地沿（002）晶面吸附，引导Zn2+的沉积。因此，这些Scms的掺入成功地减轻了阳极腐蚀、HER和枝晶。采用Scms制备的zzn ||Zn、zzn ||Cu和zzn ||V6O13电池在60℃高温下的电化学性能显著提高。这项工作强调了具有成本效益的直链电解质添加剂在提高锌阳极稳定性方面的潜力。

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

Angewandte Chemie International Edition 化学-化学综合

CiteScore

26.60

自引率

6.60%

发文量

3549

审稿时长

1.5 months

期刊介绍： Angewandte Chemie, a journal of the German Chemical Society (GDCh), maintains a leading position among scholarly journals in general chemistry with an impressive Impact Factor of 16.6 (2022 Journal Citation Reports, Clarivate, 2023). Published weekly in a reader-friendly format, it features new articles almost every day. Established in 1887, Angewandte Chemie is a prominent chemistry journal, offering a dynamic blend of Review-type articles, Highlights, Communications, and Research Articles on a weekly basis, making it unique in the field.