| 无模板电化学沉积法制备多孔WO3·2H2O薄膜及其电致变色性能 |
| Template-free electrodeposition and electrochromic performance of porous WO3·2H2O thin film |
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| 摘要: 二水合氧化钨(WO3·2H2O)因其独特的层状结构且富含层间结构水，与无水WO3相比显示出更加优异的电致变色性能。我们采用简单、无模板的阴极电化学沉积方法，成功在氧化铟锡(ITO)导电玻璃基底上制备了WO3·2H2O薄膜。通过改变电沉积液中过氧化氢(H2O2)的加入量优化沉积液的成分，获得了具有纳米多孔结构的薄膜。由此制备的WO3·2H2O薄膜显示出大的光学对比度(633 nm处的光学对比度大于90%)、快速的响应速度(着色、褪色时间均小于10 s)，以及良好的循环稳定性(经10 000次循环后，光学对比度仍保持在90%左右)。 |
| 关键词: 电致变色材料 电化学沉积 氧化钨 多孔薄膜 |
| 基金项目: 上海市自然科学基金(No.13ZR1444200)资助。 |
| Abstract: Compared with anhydrous WO3, tungsten oxide dihydrate (WO3·2H2O) shows superior electrochromic properties because of its unique layered structure and rich interlayer structural water. In this study, WO3·2H2O films were successfully fabricated on indium tin oxide (ITO) glass substrates using a facile, template-free cathodic electrodeposition method. The composition of the electrodeposition solution was optimized by modifying the volume of hydrogen peroxide (H2O2) added into the solution, and thus highly porous films were obtained. The thus deposited WO3·2H2O films exhibited excellent electrochromic performance, including significant optical contrast of over 90% at 633 nm, a fast switching speed of fewer than 10 s, and a long cycling lifetime (90% original optical modulation was retained after 10 000 cycles). |
| Keywords: electrochromic material electrodeposition tungsten oxide porous film |
| 投稿时间：2022-08-03 修订日期：2022-11-04 |
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| 宋艳玲,张启源,姚爱华.无模板电化学沉积法制备多孔WO3·2H2O薄膜及其电致变色性能[J].无机化学学报,2023,39(1):127-134. |
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