Polyoxotungstate-based nanocomposite films with multi-color change and high volumetric capacitance toward electrochromic energy-storage applications

Abstract

Electrochromic energy storage devices (EESD) can directly reflect the level of energy storage through color changes, and exploring high-performance electrode materials is an important means to develop these devices. In...

Copper complex/polyoxometalate‐based tunable multi‐color film for energy storage

“…TiO 2 nanowires were synthesized onto the FTO conductive glasses (1 × 3 cm 2 ) by hydrothermal method according to our previous reports 29,30 . Then PEI, P 2 W 17 polyanions, and Cu (phen) 2 cations were deposited onto the as‐prepared TiO 2 NW substrate by LbL method to form composite films.…”

“…TiO 2 nanowires were synthesized onto the FTO conductive glasses (1 Â 3 cm 2 ) by hydrothermal method according to our previous reports. 29,30 Then PEI, P 2 W 17 polyanions, and Cu (phen) 2 cations were deposited onto the as-prepared TiO 2 NW substrate by LbL method to form composite films. The specific preparation process is as follows: First, FTO conductive glasses modified with TiO 2 NW were soaked in APS overnight (avoid sunlight).…”

“…Several attempts were made to enhance the electrochemical and EC performance of POMs, including inorganic–organic material compounding, 23–25 modifying the molecular structure or atomic composition, 26,27 and optimizing the nanostructures 28 . Our group also reported a series of EES materials based on POMs 29,30 . In the film materials, TiO 2 nanowire (TiO 2 NW) arrays fabricated via hydrothermal method were introduced as a substrate.…”

“…28 Our group also reported a series of EES materials based on POMs. 29,30 In the film materials, TiO 2 nanowire (TiO 2 NW) arrays fabricated via hydrothermal method were introduced as a substrate. POMs were deposited on the nanowires via layer-by-layer (LbL) selfassembly method to form a unique 3D structure.…”

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

“…There is currently a dearth of research on POM-based EESDs. Recently, our research group investigated several high-performance electrochromic energy storage bifunctional composites containing saturated [ 32 ], lacunary [ 33 ], and substituted-type [ 34 ] POMs. In this study, we further developed a POM-based EESD and studied its EC and energy storage performance.…”