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Morphological Features of SiO~2~ Nanofillers Address Poor Stability Issue in Gel Polymer Electrolyte-Based Electrochromic Devices by Gaurav Kumar Silori; Subashchandrabose Thoka; Kuo-Chuan Ho is a Engineering article available to read on EtoBox.

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Nanofillers' applicability in gel polymer electrolyte (GPE)-based devices skyrocketed in the last decade as soon as their remarkable benefits were realized. However, their applicability in GPE-based electrochromic devices (ECDs) has hardly seen any development due to challenges such as optical inhomogeneity brought by incompetent nanofiller sizes, transmittance drop due to higher filler loading (usually required), and poor methodologies of electrolyte fabrication. To address such issues, herein, we demonstrate a reinforced polymer electrolyte tailored through poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP),1-butyl-3methylimidazolium tetrafluoroborate (BMIMBF 4 ), and four types of mesoporous SiO 2 nanofillers, porous (distinct morphologies) and nonporous, two each. The synthesized electrochromic species 1,1′-bis(4-fluorobenzyl)-4,4′-bipyridine-1,1′diium tetrafluoroborate (BzV, 0.05 M), counter redox species ferrocene (Fc, 0.05 M), and supporting electrolyte (TBABF 4 , 0.5 M) were first dissolved in propylene carbonate (PC) and then immobilized in an electrospun PVDF-HFP/BMIMBF 4 / SiO 2 host. We distinctly observed that spherical (SPHS) and hexagonal pore (MCMS) morphol

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Author

Gaurav Kumar Silori; Subashchandrabose Thoka; Kuo-Chuan Ho

Publisher

American Chemical Society (ACS)

Published

2023

Language

EN

Field

Engineering (Physical Sciences)