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| Type |
Poster Presentation |
| Area |
전기화학 |
| Room No. |
포스터발표장 |
| Time |
4월 21일 (금요일) 13:00~14:30 |
| Code |
ELEC.P-539 |
| Subject |
Multicolored Electrochromic devices based on Prussian blue analogues |
| Authors |
정영희, 심현관1, 김영일1,*
(주)마프로 기술연구소, Korea
1부경대학교 화학과, Korea
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| Abstract |
Prussian blue(PB, iron hexacyanoferrate(Ⅱ)) is famous for electrochromic(EC) material, known to have : water soluble form, KFeⅢ[FeⅡ(CN)6] and water insoluble form, Fe4Ⅲ[FeⅡ(CN)6)]3.
The insoluble Prussian blue(PB) becomes dispersion in aqueous solutions by surface modification with ferrocyanide anions. Prussian blue analogues(M-PBAs, M´k[M″l(CN)6]n, M′ and M″ are transition metal) have similar structure, but it is difficult to make soluble form in the same way.
In this study, we synthesized insoluble M-PBA(Cu-PBA, Co-PBA, Ni-PBA and Zn-PBA) nanoparticles by simple precipitation method. The dispersion conditions for thin film coating were optimized by controlling the solvents, additives and binders.
The flexible M-PBA films were prepared on PET/ITO substrate by wet coating method and the flexible EC film devices were assembled by the combination of the prepared WO3 and M-PBA electrodes with a polymer-gel electrolyte. WO3/Ni-PBA, WO3/Cu-PBA, WO3/Co-PBA and WO3/Zn-PBA EC devices showed reversible color change between deep blue and various colors. EC devices showed high contrast ratio and durability. |
| E-mail |
jyh93@daum.net |
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119th General Meeting of the KCS