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Zincophilic polymer semiconductor as multifunctional protective layer enables Dendrite-Free zinc metal anodes by Jiangmin Jiang; Zhenghui Pan; Jiaren Yuan; Jun Shan; Chenglong Chen; Shaopeng Li; HaiXu; Yaxin Chen; Quanchao Zhuang; Zhicheng Ju; Hui Dou; Xiaogang Zhang; John Wang is a Engineering article available to read on EtoBox.

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Zinc (Zn) metal is considered as one of the most promising anodes for aqueous zinc-ion batteries due to its high theoretical capacity, low cost, and environmental benignity. However, the uncontrolled dendrite growth and parasitic side-reactions lead to low Coulombic efficiency and limited lifespan, severely affecting their applications. Herein, a stable and robust g-C3N4 is constructed on the surface of metallic Zn anode (g-C3N4@Zn), serving as a multifunctional protective layer. The nitrogen (N)-rich g-C3N4 layer exhibits inherent zincophilic properties, in which zinc ions can be bonded with N to form Zn-N bonds, resulting in homogenous nucleation and inhibiting dendrite growth. In addition, the hydrogen evolution reaction and the formation of by-products can be effectively relieved, which are attributed to the polymer layer blocking water from the Zn surface. More importantly, in-situ optical real-time monitoring, density functional theory calculations, and molecular dynamic simulations demonstrate the effectiveness of the zincophilic g-C3N4 layer in improving stability. As expected, the g-C3N4@Zn anode achieves a remarkable cycling lifespan of around 2900 h (up to four months) i

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Author

Jiangmin Jiang; Zhenghui Pan; Jiaren Yuan; Jun Shan; Chenglong Chen; Shaopeng Li; HaiXu; Yaxin Chen; Quanchao Zhuang; Zhicheng Ju; Hui Dou; Xiaogang Zhang; John Wang

Publisher

Elsevier BV

Published

2023

Language

EN

Field

Engineering (Physical Sciences)