选择带负电荷的酸性极性添加剂来调节稳定锌离子电池的双电层。

IF 26.6 1区材料科学 Q1 Engineering

Nano-Micro Letters Pub Date : 2024-08-14 DOI:10.1007/s40820-024-01475-5

Xing Fan, Lina Chen, Yongjing Wang, Xieyu Xu, Xingxing Jiao, Peng Zhou, Yangyang Liu, Zhongxiao Song, Jiang Zhou

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引用次数: 0

摘要

锌离子电池在大规模电化学储能系统中大有可为，但仍存在界面问题，例如氢演化副反应（HER）、自腐蚀和不可控制的树枝状锌电沉积。虽然电双电层（EDL）的调节作用已在界面问题上得到验证，但选择添加剂作为调节剂的原理仍是迷雾重重。在此，我们研究了几种具有不同特性的典型氨基酸，以揭示在锌阳极上调节双电层的界面行为。带负电荷的酸性极性（NCAP）已被揭示为选择添加剂的准则，以重建具有内部亲锌 H2O 贫层的 EDL，并用 NCAP 谷氨酸取代水合 Zn2+ 的 H2O 分子。利用 EDL 调节的协同效应，通过抑制 HER 和抗自腐蚀的均匀电沉积，可显著稳定不可控界面。因此，通过添加 NCAP 谷氨酸钠，Zn|Cu 不对称电池在超过 2000 次循环后，Zn 金属的平均库仑效率高达 99.83%，而 NH4V4O10|Zn 全电池在 2 A g-1 条件下循环 3000 次后，显示出 82.1% 的高容量保持率。综上所述，这里公布的 NCAP 原理可加快设计用于锌基水性电化学储能系统的开拓性电解质添加剂。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Selection of Negative Charged Acidic Polar Additives to Regulate Electric Double Layer for Stable Zinc Ion Battery

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Selection of Negative Charged Acidic Polar Additives to Regulate Electric Double Layer for Stable Zinc Ion Battery

Highlights

Negative charged acidic polarity (NCAP) has been unveiled as the guideline for selecting additives to regulate electric double layer (EDL) for Zn-ion batteries.
NCAP glutamate has been verified to regulate EDL structure with synergetic effects, including preferential adsorption on Zn anode and reconstruction of hydrated Zn-ion clusters.
Adding NCAP additives, Zn|Cu half-cell achieves a high Coulombic efficiency of 99.83% for 2000 cycles, and NH₄V₄O₁₀|Zn full cell realizes a high-capacity retention of 82.1% for 3000 cycles.

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来源期刊

Nano-Micro Letters NANOSCIENCE & NANOTECHNOLOGY-MATERIALS SCIENCE, MULTIDISCIPLINARY

CiteScore

32.60

自引率

4.90%

发文量

981

审稿时长

1.1 months

期刊介绍： Nano-Micro Letters is a peer-reviewed, international, interdisciplinary, and open-access journal published under the SpringerOpen brand. Nano-Micro Letters focuses on the science, experiments, engineering, technologies, and applications of nano- or microscale structures and systems in various fields such as physics, chemistry, biology, material science, and pharmacy.It also explores the expanding interfaces between these fields. Nano-Micro Letters particularly emphasizes the bottom-up approach in the length scale from nano to micro. This approach is crucial for achieving industrial applications in nanotechnology, as it involves the assembly, modification, and control of nanostructures on a microscale.