Gradient design of imprinted anode for stable Zn-ion batteries

Qinghe Cao, Yong Gao, Jie Pu, Xin Zhao, Yuxuan Wang, Jipeng Chen, Cao Guan

科研成果: 期刊稿件文章同行评审

230 引用 (Scopus)

摘要

Achieving long-term stable zinc anodes at high currents/capacities remains a great challenge for practical rechargeable zinc-ion batteries. Herein, we report an imprinted gradient zinc electrode that integrates gradient conductivity and hydrophilicity for long-term dendrite-free zinc-ion batteries. The gradient design not only effectively prohibits side reactions between the electrolyte and the zinc anode, but also synergistically optimizes electric field distribution, zinc ion flux and local current density, which induces preferentially deposited zinc in the bottom of the microchannels and suppresses dendrite growth even under high current densities/capacities. As a result, the imprinted gradient zinc anode can be stably cycled for 200 h at a high current density/capacity of 10 mA cm−2/10 mAh cm−2, with a high cumulative capacity of 1000 mAh cm−2, which outperforms the none-gradient counterparts and bare zinc. The imprinted gradient design can be easily scaled up, and a high-performance large-area pouch cell (4*5 cm2) is also demonstrated.

源语言英语
文章编号641
期刊Nature Communications
14
1
DOI
出版状态已出版 - 12月 2023

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