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Long-term-stable WO3-PB complementary electrochromic devices.
- Source :
-
Journal of Alloys & Compounds . Apr2021, Vol. 861, pN.PAG-N.PAG. 1p. - Publication Year :
- 2021
-
Abstract
- • Long-term-stable WO 3 -PB complementary electrochromic devices were constructed. • The long-term stability and high optical modulation of electrochromic devices are exhibited. • Electrochemical refinement analysis of WO 3 and PB electrodes is performed. • The synergistic effects of Li+ and H+ on WO 3 and PB electrodes are clarified. The complementary electrochromic devices based on WO 3 and Prussian blue electrodes (PB) have shown a limited chemical stability and durability because WO 3 is degraded in electrochromic performance and PB is gradually dissolved in the Li+-based electrolyte under neutral pH conditions. Herein, the utilization of acetic acid as super-additive solution was proposed to improve WO 3 cathodes and stabilize PB anodes, in which the highly nanoporous nanocrystal-in-glass WO 3 and hierarchical PB was made by electron beam evaporation and electrochemical deposition method, respectively. Our findings suggest that synergistic effects of Li+ and H+ on WO 3 and Prussian blue electrodes contribute to the improvement on electrochemical, electrochromic, and cycling stability performance of the whole device. Impressively, the WO 3 -PB complementary electrochromic device could experience a superior long-term cycling stability of over 10,000 cycles, with a high coloration efficiency of 137.80 cm2 C−1 and a maximum transmittance modulation of 66.22%@ 633 nm. All these results open a new way to the construction of high-performance electrochromic devices. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 09258388
- Volume :
- 861
- Database :
- Academic Search Index
- Journal :
- Journal of Alloys & Compounds
- Publication Type :
- Academic Journal
- Accession number :
- 148728918
- Full Text :
- https://doi.org/10.1016/j.jallcom.2020.158534