A complementary electrochromic device based on W₁₈O₄₉ nanowire arrays and Prussian blue thin films

Abstract

Tungsten oxides (W18O49) nanowire arrays as effective electrochromic working electrodes were fabricated on seed-free FTO glasses through a facile solvothermal process.

Green fabrication of a complementary electrochromic device using water-based ink containing nanoparticles of WO3 and Prussian blue

“…Although there have been some reports on electrochromic devices with WO 3 and PB analogue, WO 3 lms were fabricated by techniques such as CVD (thermal evaporation), sol-gel, solvothermal, electrodeposition, and so on. [37][38][39][40] Comparing with our result, the ECDs in the previous studies showed lower change in the visible transmittance or/and slow optical switching speed (Table S3 †). Moreover, the fabrication of lms by directly applying water-soluble WO 3 nanoparticle ink (as in this research) has not been reported so far.…”

Large-Scale Multifunctional Electrochromic-Energy Storage Device Based on Tungsten Trioxide Monohydrate Nanosheets and Prussian White

“…Designing an electrochromic-energy storage device based on two suitable asymmetric electrode materials might be a feasible strategy. As is generally known, complementary electrochromic devices (ECDs) comprised of two proper electrochromic electrodes could improve the optical modulation and coloration efficiency. , Besides, based on two dissimilar active materials operating in matched potential windows, asymmetric supercapacitors (ASCs) could increase the capacitance and energy density. , …”

“…As is generally known, complementary electrochromic devices (ECDs) comprised of two proper electrochromic electrodes could improve the optical modulation and coloration efficiency. 25,26 Besides, based on two dissimilar active materials operating in matched potential windows, asymmetric supercapacitors (ASCs) could increase the capacitance and energy density. 27,28 Choosing two appropriate materials for the positive and negative electrodes of the multifunctional device is a primary mission.…”

Thermal‐Oxidative Growth of Substoichiometric WO3–x Nanowires at Mild Conditions

“…In this context, tungsten oxide NWs have been widely investigated and several synthetic strategies were proposed in the literature. [ 8,11,13 ] Hydrothermal and solvothermal methods, [ 15–19 ] thermal evaporation, [ 20–22 ] and thermal reduction [ 23 ] are most commonly adopted techniques. These procedures, however, can be quite expensive and laborious or may require the use of dangerous W precursors or solvents.…”