Translated title of the contribution: Electrochromic Property of the WO3/PANI Core-Shell Inverse Opal Structure Film

Liqi Jiang, Ke Wei, Lang Wang, Houdi Xiao, Jiuxiang Yang, Zhiyi Hu, Jing Liu, Yu Li, Mingyun Lyu, Baolian Su

Research output: Contribution to journalArticlepeer-review


A conductive polymer polyaniline(PANI) layer was introduced on the surface of the inverse opal structure tungsten trioxide(IO-WO3) film by the successive ionic layer adsorption and reaction, then a unique core-shell inverse opal structure WO3/PANI(IO-WO3/PANI) film was fabricated. The morphology, composition, and electrochemical behavior of the IO-WO3/PANI film were studied and compared with the IO-WO3 film. When the potential scan ranged from -0.6 V to 1.0 V, the IO-WO3/PANI composite film showed different colors under different voltage states, namely blue(1.0 V), green(0.2 V), light green(0 V) and blue-violet (-0.6 V). Compared with the IO-WO3 film, the electrochromic performance of the IO-WO3/PANI film is signi-ficantly improved. The coloring and fading response times are 3.8 and 6.14 s, respectively, and the color change efficiency(CE) value is 201.1 cm2/C. The improvement of electrochromic performance is mainly attri- buted to the formation of the donor-acceptor system and the hierarchically porous structure in the core-shell inverse opal, which enable rapid ion diffusion and provide a larger surface area for charge transfer reactions. The results show that the IO-WO3/PANI core-shell inverse opal film is a potential multicolor electrochromic material and has broad application prospects in the future.

Translated title of the contributionElectrochromic Property of the WO3/PANI Core-Shell Inverse Opal Structure Film
Original languageChinese (Traditional)
Pages (from-to)2996-3004
Number of pages9
JournalGaodeng Xuexiao Huaxue Xuebao/Chemical Journal of Chinese Universities
Issue number9
Publication statusPublished - 10 Sept 2021
Externally publishedYes


  • Inverse opal structure
  • Multicolor electrochromic
  • Organic/inorganic hybrid material
  • WO


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