Facet-selective molecular regulation of Zn metal anodes for durable aqueous zinc-ion batteries
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Updated: Oct 16, 2026

Zinc-Sponge Battery Electrodes that Suppress Dendrites
Published on: September 29, 2020
Lin Qin1, Dengqiao Xiao1, Qiuqi Sun1
1School of Microelectronics and Integrated Circuits (Jiangsu Key Laboratory of Semi. Dev. & IC Design, Package and Test), Nantong University, Nantong 226019, Jiangsu, China. coin@ntu.edu.cn.
Abstract:
Aqueous zinc-ion batteries (AZIBs) are attractive for grid-scale energy storage, yet Zn anodes suffer from dendrites, side reactions and restricted current windows. Herein, capecitabine (CAP) is employed as a electrolyte additive for Zn-deposition regulation and interfacial stabilization. The N/O-containing groups in CAP partially reconstruct the Zn2+ solvation and water hydrogen-bond network, reducing water activity. Meanwhile, facet-selective adsorption of CAP on Zn(100), forms an adsorption-mediated interfacial layer that suppresses parasitic reactions and promotes compact Zn(100)-textured deposition. Consequently, Zn‖Zn symmetric cells operate stably for over 7000 h at 1 mA cm-2/1 mAh cm-2. Moreover, Zn‖ZVO full cells retain 82.45% capacity after 5500 cycles at 5 A g-1. CAP-mediated electrolyte-structure regulation and Zn(100)-selective interfacial modulation provide a molecular strategy for highly reversible Zn metal anodes.
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