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化学学报
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化学学报 ›› 2002, Vol. 60 ›› Issue (7): 1203-1208. 上一篇    下一篇

研究论文

氧化铑变色薄膜的制备及其电变色研究

王海红;赵崇军;严曼明;江志裕   

  1. 复旦大学化学系.上海(200433)
  • 发布日期:2002-07-15

Preparation of Rhodium Oxide Films and Its Electrochromic Study

Wang Haihong;Zhao Chongjun;Yan Manming;Jiang Zhiyu   

  1. Department of Chemistry, Fudan University.Shanghai(200433)
  • Published:2002-07-15

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438

被引次数

9 | 4

采用溶胶-凝胶方法制备了氧化铑电致变色薄膜。通过施加阴极或阳极电位， 薄膜在碱性电解液中呈现从亮黄（还原态）到深绿（氧化态）的可塑颜色变化，而 且可达到上千次循环而性能不变。采用XRD，SEM，TG，DTA，UVV，FTIR和循环伏安 等技术对薄膜的晶态、形貌、热处理过程和电变色过程进行了研究。得出100 ℃处 理的膜内含有一定量的结晶水，其性能最好。对薄膜的电致变色性能如：着色效率 、响应时间及循环寿命、开路记忆等进行了测试，并讨论了氧化铑薄膜电变色的反 应机理。

关键词: 溶胶-凝胶法, 氧化铑, 电致变色, 薄膜, X射线衍射分析, 扫描电子显微镜

Electrochromic rhodium oxide films prepared by sol-gel method exhibited reversible two-color (bright yellow at reduction and dark green at oxidation) electrochromic behavior in alkaline solution with good cycle stability. The XRD, SEM, TG, DTA, UV-V, FTIR and voltammetry methods were used to study the structure and electrochromic properties of the films. It was found that the amorphous bright yellow rhodium oxide film formed via a heat treatment at 100 ℃ presented excellent electrochromic characteristics. Its electrochromic properties such as coloration efficiency, response time, cycle stability and open circuit memory were determined and a possible coloration mechanism of the rhodium oxide film was discussed.

Key words: SOL-GEL PROCESS, RHODIUM OXIDE, ELECTROCHROMISM, THIN FILMS, XRD, SEM

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