Unveiling The Mechanism of The Dendrite Nucleation and Growth in Aqueous Zinc Ion Batteries

Mingchang Zhang, Weidong Xu, Xuefei Han, Huiqing Fan, Tao Chen, Ya Xiong Yang, Yong Gao, Chao Zheng, Yi Yang, Ting Xiong, Yong Wei Zhang, Wee Siang Vincent Lee, Weijia Wang, Hongge Pan, Zhi Gen Yu, Junmin Xue

科研成果: 期刊稿件文章同行评审

71 引用 (Scopus)

摘要

Aqueous zinc ion batteries (ZIBs) exhibit great potential for next-generation energy storage devices. However, significant challenges exist, including the uncontrollable formation of Zn dendrite and side reactions during zinc stripping and plating. The mechanism of Zn dendrite nucleation has yet to be fully understood. In this work, the first principles simulations are used to investigate the Zn dendrite formation process. The unintentionally adsorbed O2− and OH ions are the inducing factors for Zn dendrite nucleation and growth on the Zn (0001) plane due to significantly increased Zn diffusion barriers. A top-down method is demonstrated to suppress the dendrite using delaminated V2CTx to capture O2− and OH ions thanks to reduced Zn diffusion barriers. The experimental results revealed significantly suppressed Zn dendrite nucleation and growth, resulting in a layer-by-layer deposit/stripping of Zn. Based on the electrochemical evaluations, the V2CTx-coated Zn composite delivers a high coulombic efficiency of 99.3 % at 1.0 mAh cm−2. Furthermore, the full cell achieves excellent cyclic performance of 93.6 % capacity retention after 2000 cycles at 1 A g−1. This strategy has broad scalability and can be widely applied in designing metallic anodes for rechargeable batteries.

源语言英语
文章编号2303737
期刊Advanced Energy Materials
14
9
DOI
出版状态已出版 - 1 3月 2024

指纹

探究 'Unveiling The Mechanism of The Dendrite Nucleation and Growth in Aqueous Zinc Ion Batteries' 的科研主题。它们共同构成独一无二的指纹。

引用此