A conjugated polymer with Electron-withdrawing cyano group enables for flexible asymmetric electrochromic supercapacitors

Dual‐band electrochromic materials for energy‐saving smart windows

“…Integration of organic and inorganic ECMs can combine their advantages and enhance the EC performance including colors, coloration efficiency, switching speed, and optical modulation. [ 61 ] For organic small molecules, Xu et al fabricated a novel viologen material (1‐(9‐hexyl‐9H‐carbazole)−10‐(propylphosphonic acid)‐4,4′‐bipyridilium dichloride) and a modified triphenylamine (4‐(diphenylamino)phenyl) methylphosphonic acid) as working electrode adsorbed on TiO 2 electrodes and assembled a device. [ 62 ] The device showed light transmittance change in the range of 400–800 nm is above 50%.…”

Non-conjugated triarylamine-based intrinsic microporous polyamides for an electrochromic supercapacitor: diffusion dynamics and charge–discharge studies

“…38 In addition, some studies applied the electrodeposition method to prepare the conjugated polymeric lm electrodes because of the high mobility of the polymer chain conformation and naturally composed mesoporous on the electrode during polymerization. [39][40][41][42][43][44][45] Zhang et al designed a donor-acceptor-donor monomer (CDB-EDOT) to prepare ECS electrodes by electropolymerization. The obtained polymer exhibited 4.65 mF cm −2 of areal-specic capacitance at 0.05 mA cm −2 with high coloration efficiency (CE, 158 cm 2 C −1 ), and the corresponding device could run a single yellow LED for more than 60 s. 45 Chao et al reported a conjugated polymer with a dual-redox center (thiophene and TPA) and an electronwithdrawing cyano group by applying the electrodeposition method.…”

“…The as-prepared ECS device exhibited 32.9 mF cm −2 of capacitance (at 0.1 mA cm −2 ), high optical contrast of 67%, and outstanding cycling durability (86% capacitance and 96% optical modulation retention aer 7000 cycles at 0.2 mA cm −2 ). 39 However, conjugated polymers prepared by electropolymerization address the critical disadvantages of intense colour at the neutral state and the limitation of processing for practical large-area applications. Consequently, in this study, we attempt to incorporate the TB scaffolds into the backbone of triarylamine-based polyamides (TPPA-TB and TPPA-Me-TB) to generate an intrinsic microporous structure in the resulting highly transparent polymer thin lms cast on ITO-coated glass substrate electrodes, conrmed by wide-angle X-ray diffractometry (WXRD), Brunauer-Emmett-Teller (BET) measurement, and density testing kit.…”

“…The as-prepared ECS device exhibited 32.9 mF cm −2 of capacitance (at 0.1 mA cm −2 ), high optical contrast of 67%, and outstanding cycling durability (86% capacitance and 96% optical modulation retention after 7000 cycles at 0.2 mA cm −2 ). 39…”

Sea-Cucumber-like Microstructure Polyoxometalate/TiO2 Nanocomposite Electrode for High-Performance Electrochromic Energy Storage Devices

“…Deng et al [ 24 ] fabricated MnO 2 /WO 3 EC electrodes with ultra-long stability and excellent optical modulation, and assembled all-solid-state zinc-ion supercapacitors with high coloration efficiency and cycling stability. Zhang et al [ 25 ] constructed asymmetric electrochromic supercapacitors based on a new conjugated polymer (PETC) and V 2 O 5 ion-storage material, which outperformed other conjugated polymer-based electrochromic supercapacitors in terms of electrochemical performance. Polyoxometalates (POMs) are ideal EC and electrochemical storage materials.…”