Integrating Electric Ambipolar Effect for High-Performance Zinc Bromide Batteries

IF 26.6 1区材料科学 Q1 Engineering

Nano-Micro Letters Pub Date : 2025-02-13 DOI:10.1007/s40820-024-01636-6

Wenda Li, Hengyue Xu, Shanzhe Ke, Hongyi Zhang, Hao Chen, Gaijuan Guo, Xuanyi Xiong, Shiyao Zhang, Jianwei Fu, Chengbin Jing, Jiangong Cheng, Shaohua Liu

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Abstract

The coupling of fast redox kinetics, high-energy density, and prolonged lifespan is a permanent aspiration for aqueous rechargeable zinc batteries, but which has been severely hampered by a narrow voltage range and suboptimal compatibility between the electrolytes and electrodes. Here, we unprecedentedly introduced an electric ambipolar effect for synergistic manipulation on Zn²⁺ ternary-hydrated eutectic electrolyte (ZTE) enabling high-performance Zn-Br₂ batteries. The electric ambipolar effect motivates strong dipole interactions among hydrated perchlorates and bipolar ligands of L-carnitine (L-CN) and sulfamide, which reorganized primary cations solvation sheath in a manner of forming Zn[(L-CN)(SA)(H₂O)₄]²⁺ configuration and dynamically restricting desolvated H₂O molecules, thus ensuring a broadened electrochemical window of 2.9 V coupled with high ionic conductivity. Noticeably, L-CN affords an electrostatic shielding effect and an in situ construction of organic–inorganic interphase, endowing oriented Zn anode plating/stripping reversibly for over 2400 h. Therefore, with the synergy of electro/nucleophilicity and exceptional compatibility, the ZTE electrolyte dynamically boosts the conversion redox of Zn-Br₂ batteries in terms of high specific capacity and stable cycling performance. These findings open a window for designing electrolytes with synergetic chemical stability and compatibility toward advanced zinc-ion batteries.

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整合电动安比极效应，打造高性能溴化锌电池

快速氧化还原动力学、高能量密度和长寿命的耦合是水性可充电锌电池的永久目标，但由于电压范围窄，电解质和电极之间的兼容性不理想，这一目标受到了严重的阻碍。在这里，我们史无前例地引入了一种电双极性效应，用于协同操纵Zn2+三元水合共晶电解质（ZTE），从而实现高性能Zn-Br2电池。电双极性效应激发了水合高氯酸盐与l -肉碱（L-CN）和磺胺双极性配体之间的强偶极相互作用，重组了伯电阳离子的溶剂化鞘，形成Zn[(L-CN)(SA)(H2O)4]2+构型，并动态限制了脱溶的H2O分子，从而确保了2.9 V的电化学窗口和高离子电导率。值得注意的是，L-CN具有静电屏蔽作用和原位构建有机-无机界面，使取向锌阳极电镀/剥离的可逆时间超过2400 h。因此，凭借亲电性/亲核性的协同作用和优异的相容性，中兴通讯电解质动态促进Zn- br2电池的转化氧化还原，具有较高的比容量和稳定的循环性能。这些发现为设计具有协同化学稳定性和兼容性的电解质为先进的锌离子电池打开了一扇窗。

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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.