Percolation effect of V2O5 nanorod/graphene oxide nanocomposite films for stable fast-switching electrochromic performances

Studies on transmittance modulation and ions transfer kinetic based on capacitive-controlled 2D V2O5 inverse opal film for electrochromic energy storage application

“…Compared to un-templated V 2 O 5 , 2D V 2 O 5 IO film exhibited higher current density and larger CV areas, proving that more active materials participated in the redox reaction. This phenomenon could be ascribed to the larger specific 13.39×10 −10 cm 2 •s −1 for V 2 O 5 nanorod/graphene oxide nanocomposite [38].…”

Advances in multicolor electrochromic devices based on inorganic materials

“…Therefore, the usage of the core–shell structure of composite films can increase the structural stability, thus achieving excellent cycling stability. Koo et al 58 developed V 2 O 5 nanorod/graphene oxide nanocomposite films through a sol–gel spin-coating process. Optimizing the volume percentage of graphene oxide (from 0 to 3 vol%) resulted in stable and fast switching.…”

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

“…37 The E opt of the GO/V 2 O 5 composites decreased from 2.67 to 2.608 eV because of the effects of the narrowing gap (E g B 0.5 eV) of GO with increasing GO concentration from 0 to 3 vol %. 205 The E opt was also affected by the polymer types (isopropyl alcohol -PIA, alkoxide, and polyethylene glycol -PEG) and different dilutions (low concentration dilution -LCP and high concentration dilution -HCP). 206 The HCP film showed a higher E opt than the LCP film, but E opt decreased to 0.51 eV and 0.38 eV in the PEG-containing LCP and HCP thin films, respectively.…”

“…The high conductivity of the composite due to the contribution of high conductivity materials, such as graphene, GO, RGO, and PEDOP, improves the switching time. 205,[259][260][261] Composite materials exhibit improved electrical, mechanical, and optical properties yielding durable ECDs. A previous study reported that a SnO 2 /V 2 O 5 hybrid still maintained 85% optical modulation of the original value after 2000 cycles, while pure V 2 O 5 lost almost 90% after 300 cycles.…”