Mass-producible slit coating for large-area electrochromic devices

Novel Prussian White@MnO2-Based Inorganic Electrochromic Energy Storage Devices with Integrated Flexibility, Multicolor, and Long Life

“…33,34 More importantly, the color change only from blue to colorless during the electrochromic process is not sensitive enough for chrominance resolution in the real-time state. 35 For this purpose, the composite hybrid electrode materials such as PB and MnO 2 can be considered due to the synergistically improved role of faradic redox active materials (energy density source PB) and electrical double-layer capacitor (power-density source MnO 2 ). 36,37 Here, PB serves as the high-energy storage battery-type material by virtue of its unique 3D porous micro/nano-architectures with a high specific surface area, while MnO 2 materials play the pseudocapacitive electrochemical role due to their high theoretical specific capacitance value.…”

“…One is the poor ion diffusion kinetics for PB in the nonaqueous Li-ion electrolyte, leading to a slow coloring/bleaching response . Second, its transmittance spectrum modulation is mainly concentrated on the narrow range from 600 to 800 nm, which limits its EC application in a wide optical spectrum. , More importantly, the color change only from blue to colorless during the electrochromic process is not sensitive enough for chrominance resolution in the real-time state . For this purpose, the composite hybrid electrode materials such as PB and MnO 2 can be considered due to the synergistically improved role of faradic redox active materials (energy density source PB) and electrical double-layer capacitor (power-density source MnO 2 ). , Here, PB serves as the high-energy storage battery-type material by virtue of its unique 3D porous micro/nano-architectures with a high specific surface area, while MnO 2 materials play the pseudocapacitive electrochemical role due to their high theoretical specific capacitance value. , This hybrid system enables one to circumvent serious drawbacks of the coordination compound PB like poor electrical conductivities and low ion transfer rate .…”

Flexible electrochromic devices based on tungsten oxide and Prussian blue nanoparticles for automobile applications

“…Slit coating was also evaluated for the fabrication of large-area thin films on a G2 (370 mm × 470 mm)-sized indium tin oxide (ITO)-coated glass substrate. 33 High-quality EC thin films can be fabricated in a short period at a low cost using wet coating techniques, such as slit-coating 34 and roll-to-roll 35 methods. However, suitability of the application of these WO 3 and PB inks on flexible substrates has not yet been evaluated.…”

Facile preparation of black electrochromic ink using a copper oxide nanoparticle suspension

“…Our group has been developing inks based on aqueous dispersions of tungsten oxide (WO 3 ) and PB nanoparticles (NPs) for application in wet processes to prepare EC thin lms 8,10 . Among wet processes, printing 19 and coating 20,21 offer the advantage of enabling EC thin lm fabrication on large-scale substrates in a short time and at a low cost. In addition, these techniques are advantageous for thin lm preparation on glass substrates and exible substrates.…”