硅烷修饰锌阳极诱导(100)平面优先成核使水锌电池稳定

IF 18.5 1区 材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY
Hao Wu, Han Tian, Hong‐Ting Yin, Jin‐Lin Yang, Ruiping Liu
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引用次数: 0

摘要

锌阳极上有害的枝晶生长和水的表面腐蚀严重阻碍了水锌电池的应用。本文采用三乙酰氧基(乙烯基)硅烷(VTSE)作为锌金属阳极的蚀刻剂和保护层。由于VTSE在Zn(002)和Zn(101)面上的优先吸附,处理后的Zn阳极在VTSE覆盖的情况下表现出高度暴露的(100)面。该VTSE层具有较强的Zn─Si─O相互作用,引导均匀的Zn2+沉积,具有良好的(100)面取向继承,进一步降低了成核过电位,加速了脱溶过程。同时,致密的VTSE层抑制水渗透,抑制析氢腐蚀。正如预期的那样,Zn||Cu半电池在1ma cm - 2和1mah cm - 2下的寿命超过1000小时。在Zn||NVO全电池中,在1 a g−1下循环2000次后,容量保持率达到73.1%。这项工作为锌阳极保护的晶面操纵工程提供了新的见解。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Silane‐Modified Zn Anode Induced (100) Plane Preferential Nucleation Enables Stable Aqueous Zn Batteries
Detrimental dendrite growth and water‐involved surface corrosion on Zn anode significantly hinder the aqueous Zn batteries implementation. Herein, Triacetoxy(vinyl)silane (VTSE) is employed as an etchant and a protective layer for Zn metal anode. Owing to the preferential adsorption of VTSE on Zn (002) and (101) planes, the treated Zn anode exhibits highly exposure of (100) facet with VTSE coverage. Such VTSE layer with strong Zn─Si─O interaction guides homogeneous Zn2+ deposition with a good inheritance of (100) plane orientation, further bringing about a reduced nucleation overpotential and accelerated desolvation process. Meanwhile, the dense VTSE layer inhibits the water penetration and suppresses hydrogen evolution corrosion. As expected, the Zn||Cu half cell exhibits prolonged lifespan over 1000 h at 1 mA cm−2 for 1 mAh cm−2.In the Zn||NVO full cell, a remarkable capacity retention of 73.1% can be reached after 2,000 cycles at 1 A g−1. This work offers new insights on the crystal plane manipulation engineering for aqueous Zn anode protection.
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来源期刊
Advanced Functional Materials
Advanced Functional Materials 工程技术-材料科学:综合
CiteScore
29.50
自引率
4.20%
发文量
2086
审稿时长
2.1 months
期刊介绍: Firmly established as a top-tier materials science journal, Advanced Functional Materials reports breakthrough research in all aspects of materials science, including nanotechnology, chemistry, physics, and biology every week. Advanced Functional Materials is known for its rapid and fair peer review, quality content, and high impact, making it the first choice of the international materials science community.
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