优先Na+吸附驱动的阳离子静电斥力使低温下高度可逆的锌阳极成为可能

IF 36.3 1区材料科学 Q1 Engineering

Nano-Micro Letters Pub Date : 2025-09-01 DOI:10.1007/s40820-025-01889-9

Guanchong Mao, Pan Xu, Xin Liu, Xingyu Zhao, Zexiang Shen, Dongliang Chao, Minghua Chen

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引用次数: 0

摘要

将低成本、低还原电位的Na+引入到锌基电池水溶液中，通过优先吸附Na+和阳离子间静电斥力抑制Zn2+在阳极界面的聚集，从而实现均匀的Zn沉积，显著增强Zn阳极的低温可逆性。低离子电位的Na+在阳极-电解质界面自发吸附，有效减少溶剂化水分子，抑制寄生反应，从而显著提高低温下锌金属水电池的库仑效率。在−40℃的低温条件下，Zn||电池的镀剥循环时间超过2500 h， Zn||PANI电池的低温性能优异，充放电循环次数超过8000次，容量保持率超过90%。

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Prioritized Na+ Adsorption-Driven Cationic Electrostatic Repulsion Enables Highly Reversible Zinc Anodes at Low Temperatures

Highlights

The introduction of low-cost, low-reduction-potential Na⁺ into aqueous Zn-based battery electrolytes suppresses Zn²⁺ aggregation at the anode interface through preferential Na⁺ adsorption and inter-cationic electrostatic repulsion, thereby enabling homogeneous Zn deposition and significantly enhanced low-temperature reversibility of Zn anodes.
Na⁺ with low ionic potential spontaneously adsorbs at the anode–electrolyte interface, effectively reducing solvated water molecules and suppressing parasitic reactions, thus significantly improving the Coulombic efficiency of aqueous zinc metal batteries under low temperatures.
At a low temperature of − 40 °C, the Zn||Zn cells maintained stable plating/stripping cycles for over 2500 h, and the Zn||PANI full cell exhibited excellent low-temperature performance with over 8000 charge–discharge cycles and a high capacity retention of more than 90%.

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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.