成核
阳极
合金
铟
沉积(地质)
相(物质)
扩散
材料科学
枝晶(数学)
冶炼
冶金
图层(电子)
跟踪(心理语言学)
化学
复合材料
电极
热力学
物理
几何学
数学
哲学
沉积物
语言学
古生物学
地质学
物理化学
有机化学
作者
Yizhao Chai,Xuesong Xie,Zhangxing He,Guangyi Guo,Pinji Wang,Zhenyue Xing,Yan Tang,Bingan Lu,Shuquan Liang,Jiang Zhou
出处
期刊:Chemical Science
[The Royal Society of Chemistry]
日期:2022-01-01
卷期号:13 (39): 11656-11665
被引量:31
摘要
Reversibility and stability are considered as the key indicators for Zn metal anodes in aqueous Zn-ion batteries, yet they are severely hindered by uncontrolled Zn stripping/plating and side reactions. Herein, we fabricate a bulk phase ZnIn alloy anode containing trace indium by a typical smelting-rolling process. A uniformly dispersed bulk phase of the whole Zn anode is constructed rather than only a protective layer on the surface. The Zn deposition can be regarded as instantaneous nucleation due to the adsorption of the evenly dispersed indium, and formation of the exclusion zone for further nucleation can be prevented at the same time. Owing to the bulk phase structure of ZnIn alloy, the indium not only plays a crucial role in Zn deposition, but also improves the Zn stripping. Consequently, the as-designed ZnIn alloy anode can sustain stable Zn stripping/plating for over 2500 h at 4.4 mA cm-2 with nearly 6 times smaller voltage hysteresis than that of pure Zn. Moreover, it enables a substantially stable ZnIn//NH4V4O10 battery with 96.44% capacity retention after 1000 cycles at 5 A g-1. This method of regulating the Zn nucleation by preparing a Zn-based alloy provides a potential solution to the critical problem of Zn dendrite growth and by-product generation fundamentally.
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