Aqueous alkaline electrolytes for dynamic windows based on reversible metal electrodeposition with improved durability,Journal of Materials Chemistry C

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Aqueous alkaline electrolytes for dynamic windows based on reversible metal electrodeposition with improved durability
Journal of Materials Chemistry C ( IF 5.7 ) Pub Date : 2019/12/20 , DOI: 10.1039/c9tc05546k
Darren D. Miller _{1,

2,

3,

4} , Judy Y. Li _{1,

2,

3,

4} , Shakirul M. Islam _{1,

2,

3,

4} , Joseph F. Jeanetta _{1,

2,

3,

4} , Christopher J. Barile _{1,

2,

3,

4}

Affiliation

Dynamic windows, which have electronically tunable transmission, are desirable for buildings and automobiles due to their aesthetics and ability to reduce lighting, heating, and cooling energy costs. Reversible metal electrodeposition has recently emerged as a promising alternative to dynamic windows based on electrochromic materials. In this manuscript, we develop alkaline electrolytes that facilitate the reversible electrodeposition of Bi and Cu. Through spectroelectrochemical measurements, we determined that a chelating ligand can be used to design optically reversible devices that exhibit sufficient Bi³⁺ solubility in alkaline media. Unlike previously studied acidic Bi–Cu electrolytes, these alkaline electrolytes do not degrade the tin-doped indium oxide transparent conductors typically used in dynamic windows. As a result, we demonstrate that practical two-electrode 25 cm² dynamic windows with these alkaline electrolytes exhibit superior durability to those containing acidic electrolytes. These results are important for the advancement of robust reversible metal electrodeposition technologies.

中文翻译：

基于可逆金属电沉积的动态窗用碱性水电解质，具有改善的耐久性

具有电子可调透射率的动态窗户，由于其美观和减少照明，加热和冷却能源成本的能力，对于建筑物和汽车而言是理想的。最近，可逆金属电沉积已成为基于电致变色材料的动态窗口的有前途的替代方法。在本手稿中，我们开发了碱性电解质，可促进Bi和Cu的可逆电沉积。通过光谱电化学测量，我们确定螯合配体可用于设计具有足够Bi ^3+的光学可逆器件在碱性介质中的溶解度。与先前研究的酸性Bi-Cu电解质不同，这些碱性电解质不会使动态窗口中通常使用的掺杂锡的氧化铟透明导体降解。结果，我们证明了使用这些碱性电解质的实用的两电极25 cm ²动态窗口比包含酸性电解质的电解质具有更好的耐久性。这些结果对于鲁棒的可逆金属电沉积技术的发展非常重要。

更新日期：2020-02-12

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