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Electrochromic Devices Based on Cellulose Film/PEDOT:PSS and Its Properties
Received:July 28, 2022  
DOI：10.11980/j.issn.0254-508X.2023.04.006
Key Words:electrochromic device  cellulose film  PEDOT： PSS  transparent conductive substrate
Fund Project:国家自然科学基金（31971612；31700520）。
Author NameAffiliationPostcode
SUN Fengwei College of Material Engineering， Fujian Agriculture and Forestry University， Fuzhou， Fujian Province， 350108 350108
JIANG Jiajun College of Material Engineering， Fujian Agriculture and Forestry University， Fuzhou， Fujian Province， 350108 350108
ZHENG Yiling College of Material Engineering， Fujian Agriculture and Forestry University， Fuzhou， Fujian Province， 350108 350108
LI Jianguo* College of Material Engineering， Fujian Agriculture and Forestry University， Fuzhou， Fujian Province， 350108
National for Administration Key Lab of Plant Fiber Functional Materials， Fuzhou， Fujian Province， 350108 		350108
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Abstract:In this study， an environmentally friendly electrochromic device （ECD）was developed based on cellulose.Poly（3，4-ethylenedioxyethiophene）-poly（styrene sulfonic acid） （PEDOT： PSS） was spin-coated on the cellulose film surface to obtain the cellulose film/PEDOT：PSS transparent conductive substrate， which was used to compound with electrolytes to build ECD. As the number of PEDOT：PSS spin coats on the cellulose film surface increased， the conductivity of the cellulose film/PEDOT：PSS transparent conductive substrate showed an increasing trend and the light transmission showed a decreasing trend. The cellulose film/PEDOT：PSS transparent conductive substrate spin-coated with 3-layer had light transmission of 77% and resistance of 465 Ω/sq. By applying a positive voltage of 3 V， the transmittance of prepared ECD decreased from 77% to 53% within 10 s， and the transmittance was quickly recovered by applying a negative voltage. In addition， the electrochromic ability of prepared ECD remained relatively stable after 100 cycles.
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