Large-scale preparation of solution-processable one-dimensional V2O5 nanobelts with ultrahigh aspect ratio for bifunctional multicolor electrochromic and supercapacitor applications

High‐Performance Ytterbium‐Doped V2O5 ⋅ H2O Binder‐Free Thin‐Film Electrodes for Supercapacitors

“…Comparing 1), the specific capacitance of 8 % YbÀ V 2 O 5 • nH 2 O thin film electrode is much higher. [38][39][40][41][42][43][44][45][46][47] The above phenomenon is consistent with the CV results, which proves that doping proper amount of Yb 3 + can improve markedly electrochemical performance of V 2 O 5 • nH 2 O. Figure 4d shows the GCD test results of 8 % YbÀ V 2 O 5 • nH 2 O thin film electrode under different current densities ranging from 0.5 A g À 1 to 5 A g À 1 .…”

In Situ Raman Observation of Dynamically Structural Transformation Induced by Electrochemical Lithium Intercalation and Deintercalation from Multi‐Electrochromic V2O5 Thin Films

“…The V 2 O 5 thin films display multi-color changes from blackishgreen to reddish-orange due to the intercalation and deintercalation of lithium ions in the voltage range of −1.0 V to +2.0 V. As Figure 4c shows, the colored and bleached switching times of the V 2 O 5 thin film, which is stipulated the time required for the change in transmittance of the film to reach 90% between the colored and bleached states, are respectively calculated to be 36 s and 33 s in the in situ optical transmittance spectra at λ = 800 nm. In addition, the coloration efficiency (η), which is defined as the change in optical density (ΔOD) caused by the charge stored per unit area of the V 2 O 5 thin film at a specific wavelength during the coloration process, can be calculated by the following standard Equation (3) [40] / log / / bleached colored OD q T T q η ( )…”

Recent advances in vanadium pentoxide (V2O5) towards related applications in chromogenics and beyond: fundamentals, progress, and perspectives

“…57,83,150 NBmembrane hybrid structures with a width of 20-40 nm fabricated by a hydrothermal method showed a high contrast of 62% with bleaching-coloration time of 7.0-9.9 s at 700 nm. 93 Compared to commercial bulk V 2 O 5 with a contrast of 3.8% at 490 nm and a bleaching-coloration time of 8.5-6.6 s, ultra-long NBs (length up 20 mm, width 10-30 nm) inhibit excellent EC with a contrast of 41.6% and a bleaching-coloration time of 4.2-1.4 s. 242 A rapid bleaching-coloration time (2.6-2.8 s) is achieved for NWs with an average width of approximately 15 nm and several micrometer lengths. 89 The advantages of the solution and chemical methods on the growth of 1D nanostructures allow the easy control of the size, orientation, and morphology.…”