研究目的
To develop a dual-band electrochromic energy storage (DEES) smart window capable of independently controlling visible light and near-infrared transmittance with high charge-storage capacity for energy-efficient buildings.
研究成果
The study successfully demonstrated a DEES smart window using Ta-doped TiO2 nanocrystals, achieving independent control of VIS and NIR transmittance with high charge-storage capacity, good bistability, and cycle stability, representing a significant advancement for energy-saving building technologies.
研究不足
The dynamic range for selective NIR modulation in the full device was lower than in three-electrode measurements due to counter electrode coloring; potential optimization for broader applications and scalability may be needed.
1：Experimental Design and Method Selection:
The study involved designing a DEES window using Ta-doped TiO2 nanocrystals synthesized via a fluoride-assisted one-pot method, with electrochemical and optical performance evaluated in three-electrode and full-cell configurations.
2：Sample Selection and Data Sources:
Ta-doped TiO2 nanocrystals were synthesized and characterized; ITO glass substrates were used for electrode fabrication.
3：List of Experimental Equipment and Materials:
Included materials like titanium ethoxide, tantalum(V) fluoride, oleic acid, ITO glass, and equipment such as XRD (Bruker D8 Advance), TEM (JEOL JEM-2100F), SEM (JEOL JSM 6700F), spectrometers (ASD Quality Spec Pro, Avantes AvaSpec), and electrochemical cells.
4：Experimental Procedures and Operational Workflow:
Synthesis of nanocrystals, spin-coating on ITO, thermal annealing, assembly of devices with NiO counter electrodes, and measurements of electrochemical and optical properties.
5：Data Analysis Methods:
Cyclic voltammetry, transmittance spectroscopy, calculation of diffusion coefficients, coloration efficiency, and charge-storage capacity using standard equations.
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