Investigating Formate, Sulfate, and Halide Anions in Reversible Zinc Electrodeposition Dynamic Windows
Investigating Formate, Sulfate, and Halide Anions in Reversible Zinc Electrodeposition Dynamic Windows
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研究可逆锌电沉积动态窗口中的甲酸根、硫酸根和卤化物阴离子
DOI：
10.1021/acsami.2c14893
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发表时间：
2022
影响因子：
9.5
通讯作者：
Barile, Christopher J.
中科院分区：
文献类型：
--
作者：
Madu, Desmond C.;Lilo, Micah V.;Thompson, Andrew A.;Pan, Hanqing;McGehee, Michael D.;Barile, Christopher J.
可逆金属电沉积（RME）是一种新兴的和有前途的方法，用于设计具有电控透射、优异的色中性和宽动态范围的动态窗口。Zn由于其快速开关动力学和可逆性而成为基于金属的动态窗口的可行选择，尽管其沉积电压非常负。本文研究了锌电沉积支持液阴离子对透明掺锡氧化铟电沉积的影响。通过系统地添加或去除电解质的成分，我们能够在阴离子和Zn RME的有效性之间建立联系。这种洞察力使我们能够设计实用的双电极25 cm 2 Zn动态窗口，在20 s内切换到<1%。最后，我们证明了Zn（OH）2物种在工作电极上的积累降低了长期循环期间Zn窗口的光学对比度。然而，通过酸浸泡消除这些物质可以使窗户循环至少500次。在聚乙二醇添加剂存在下的可逆Zn电沉积进一步将循环寿命提高到大于1000次循环。两者合计，这些研究突出了重要的设计原则，用于构建基于Zn RME的鲁棒动态窗口。
Reversible metal electrodeposition (RME) is an emerging and promising method for designing dynamic windows with electrically controllable transmission, excellent color neutrality, and wide dynamic range. Zn is a viable option for metal-based dynamic windows due to its fast switching kinetics and reversibility despite its very negative deposition voltage. In this manuscript, we study the effect of the supporting electrolyte anions for Zn electrodeposition on transparent tin-doped indium oxide. Through systematic additions or removal of components of the electrolytes, we are able to establish a link between the anions and the effectiveness of Zn RME. This insight allows us to design practical two-electrode 25 cm2Zn dynamic windows that switch to <1% within 20 s. Lastly, we demonstrate that the accumulation of Zn(OH)2species on the working electrode degrades the optical contrast of Zn windows during long-term cycling. However, the elimination of these species through acid immersion allows the windows to cycle at least 500 times. Reversible Zn electrodeposition in the presence of a polyethylene glycol additive further improves the cycle life to greater than 1000 cycles. Taken together, these studies highlight important design principles for the construction of robust dynamic windows based on Zn RME.