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The effect of temperature on the preparation of electrochromic nickel oxide by an electroless method

机译：温度对化学法制备电致变色氧化镍的影响

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摘要

The advantages of nickel oxide as an electrochromic material are due to its good contrast of transmittance and its suitable use as a secondary electrochrome. Compared to other methods of depositing eletrochromic nickel oxide, coating nickel oxide by electroless is simple and easy to scale-up for industrial application. This study presents the preparation of nickel oxide film on an ITO substrate by an electroless method and oxidizing it with heat treatment. The influence of oxidizing temperature in heat treatment procedures is notable. The morphology of the film was analyzed by a scanning electron microscope (SEM) and X-ray diffraction (XRD). Heat temperature at 380 degrees C obtained optimal of electrochromic properties. The transmittance difference (Delta T) of the film at 630 nm was maintained at 69%, and the amount of transferred charge during cyclic voltammetry was approximately 0.8 mC/cm(2) after 1000 cycles of redox, which was operated between -1.5 and +1.5 V potential step. The degradation of the film was decreased by increasing the oxidizing temperature. The evidences showed electrochromic abilities of nickel oxide were affected by heat-treatment procedures. All these analyses provided a novel method for preparing the electrochromic nickel oxide in a low-cost way. (c) 2006 Elsevier B.V. All rights reserved.
机译：氧化镍作为电致变色材料的优点是由于其良好的透射率对比度以及适合用作第二电致变色材料。与其他沉积电致变色氧化镍的方法相比，通过化学镀法涂覆氧化镍简单且易于扩大规模，以用于工业应用。这项研究提出了通过化学方法在ITO基板上制备氧化镍膜并通过热处理使其氧化的方法。热处理过程中氧化温度的影响是显着的。通过扫描电子显微镜（SEM）和X射线衍射（XRD）分析膜的形态。 380摄氏度的加热温度获得了最佳的电致变色性能。膜在630 nm处的透射率差（Delta T）保持在69％，并且在1000次氧化还原循环后，循环伏安法中转移的电荷量约为0.8 mC / cm（2），操作在-1.5和1.5之间。 +1.5 V电位阶跃。膜的降解通过提高氧化温度而减少。证据表明，氧化镍的电致变色能力受热处理程序的影响。所有这些分析提供了一种以低成本方式制备电致变色氧化镍的新颖方法。 （c）2006 Elsevier B.V.保留所有权利。

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