研究目的
To investigate the catalytic properties of biomass-derived carbon supported tungsten-based nanohybrids as counter electrode catalysts in dye-sensitized solar cells (DSSCs) for accelerating the triiodide reduction reaction.
研究成果
The introduction of biomass-derived carbon transformed the morphology of MWO from spherical to spindle-like and enhanced the catalytic properties of tungsten-based nanohybrids. The DSSCs with MWO-C and ZWO-C CEs showed superior PCEs of 7.33% and 7.61%, respectively, compared to Pt CE (7.04%). The synergistic effect between tungsten-based bimetal oxides and biomass-derived carbon significantly improved the electrocatalytic activity for the triiodide reduction reaction, making these composites promising alternatives to Pt-based CEs in DSSCs.
研究不足
The study focuses on the catalytic properties of tungsten-based nanohybrids with biomass-derived carbon for DSSCs. Potential limitations include the scalability of the hydrothermal synthesis method and the long-term stability of the catalysts under operational conditions.
1：Experimental Design and Method Selection:
Hydrothermal synthesis of manganese tungstate (MWO), zinc tungstate (ZWO), and copper tungstate (CWO) embedded biomass-derived carbon (MWO-C, ZWO-C, CWO-C).
2：Sample Selection and Data Sources:
Aloe peel waste was used as the source for biomass-derived carbon. Tungsten-based compounds were synthesized using Zn(NO3)2·9H2O, ammonium paratungstate, and other precursors.
3：List of Experimental Equipment and Materials:
Autoclave, oven, electric crusher, X-ray powder diffraction (XRD), field emission scanning electron microscopy (FESEM), electrochemical analyzer (Chen-Hua, CHI602, Shanghai, China), digital source meter (Keithley, 2400).
4：0).
Experimental Procedures and Operational Workflow:
4. Experimental Procedures and Operational Workflow: Synthesis of biomass-derived carbon, preparation of tungsten-based samples, assembly of DSSCs, characterization using XRD, FESEM, J-V curves, CV curves, Tafel polarization tests, and EIS curves.
5：Data Analysis Methods:
Analysis of XRD patterns, FESEM images, J-V curves, CV curves, Tafel plots, and Nyquist plots to evaluate the electrocatalytic properties and performance of the catalysts.
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