Rationalized Electroepitaxy toward Scalable Single‐Crystal Zn Anodes

• DOI: 10.1002/adma.202301410
• Publication Date: 2023-04-06T16:14:37Z
• Authors: Yiwen Su; Buhang Chen; Yingjie Sun; Zaikun Xue; Yuhan Zou; Dongzi Yang; Luzhao Sun; Xianzhong Yang; Chao Li; Yujia Yang; Xiuju Song; Wenyi Guo; Shixue Dou; Dongliang Chao; Zhongfan Liu; Jingyu Sun
• Keywords: Zinc; Alloys; 7. Clean energy; Electrodes; Electroplating

Electroepitaxy is recognized as an effective approach to prepare metal electrodes with nearly complete reversibility. Nevertheless, large-scale manipulation still not attainable owing complicated interfacial chemistry. Here, the feasibility of extending Zn electroepitaxy toward bulk phase over a mass-produced mono-oriented Cu(111) foil demonstrated. Interfacial Cu-Zn alloy and turbulent electroosmosis are circumvented by adopting potentiostatic electrodeposition protocol. The as-prepared single-crystalline anode enables stable cycling symmetric cells at stringent current density 50.0 mA cm-2 . assembled full cell further sustaines capacity retention 95.7% 5.0 A g-1 for 1500 cycles, accompanied controllably low N/P ratio 7.5. In addition Zn, Ni can be realized using same approach. This study may inspire rational exploration design high-end electrodes.