Chronopotentiometric Deposition of Nanocobalt Oxide for Electrochromic Auxiliary Active Electrode Application,Physica Status Solidi (A) - Applications and Materials Science

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Chronopotentiometric Deposition of Nanocobalt Oxide for Electrochromic Auxiliary Active Electrode Application
Physica Status Solidi (A) - Applications and Materials Science Pub Date : 2020-07-18 , DOI: 10.1002/pssa.202000173
Devesh K. Pathak ₁ , Anjali Chaudhary ₁ , Manushree Tanwar ₁ , Uttam K. Goutam ₂ , Herbert Pfnür ₃ , Rajesh Kumar _{1,

4,

5}

Affiliation

A dense nanofilm of Co₃O₄ is synthesized using constant current electrodeposition on a conducting transparent electrode that works not only as a counter electrode but also shows electrochromic (EC) properties on its own. The isolated active nano‐Co₃O₄ electrode shows reduction in the redox potential and good color contrast between its yellowish transparent and dark states at different bias conditions. The electrode shows improved color contrast, stability, and cycle life. In situ spectroelectrochemical studies of the nanoelectrode reveals that the bias‐induced redox activity of the metal oxide leads to the color change between yellowish and opaque states. The bias‐induced color change makes it an active EC counter‐ion electrode for appropriate solid‐state EC devices.

中文翻译：

计时电位沉积纳米钴氧化物在电致变色辅助活性电极中的应用

使用恒定电流电沉积在导电透明电极上合成了密集的Co ₃ O ₄纳米膜，该导电透明电极不仅用作对电极，而且还具有电致变色（EC）特性。隔离的活性纳米Co ₃ O ₄在不同的偏压条件下，该电极显示出氧化还原电位降低和淡黄色透明状态与暗状态之间良好的颜色对比。电极显示出改善的颜色对比度，稳定性和循环寿命。纳米电极的原位光谱电化学研究表明，偏置诱导的金属氧化物氧化还原活性导致颜色在淡黄色和不透明状态之间变化。偏压引起的颜色变化使其成为适用于固态EC设备的有源EC反离子电极。

更新日期：2020-07-18

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