研究目的
Investigating the synthesis and application of Bi2S3/carbon nanofiber composites as counter electrodes in dye-sensitized solar cells to replace platinum-based electrodes for cost reduction and performance enhancement.
研究成果
Bi2S3/CNFs composites demonstrate superior electrochemical performance as CEs in DSSCs, achieving a higher PCE than Pt CEs. The study highlights the potential of Bi2S3/CNFs composites as low-cost, efficient alternatives to Pt-based CEs, facilitating the large-scale application of DSSCs.
研究不足
The study focuses on the optimization of Bi2S3 content and film thickness for CE performance, but scalability and long-term stability under operational conditions are not extensively discussed.
1：Experimental Design and Method Selection:
The study employs electrospinning and hydrothermal methods to synthesize Bi2S3/CNFs composites.
2：Sample Selection and Data Sources:
CNFs are prepared using PAN solution via electrospinning, followed by carbonization. Bi2S3 nanoparticles are hydrothermally synthesized and loaded onto CNFs.
3：List of Experimental Equipment and Materials:
Includes electrospinning setup, hydrothermal synthesis apparatus, and materials like bismuth nitrate pentahydrate, thioacetamide, etc.
4：Experimental Procedures and Operational Workflow:
Detailed steps for electrospinning, hydrothermal synthesis, and CE preparation are provided.
5：Data Analysis Methods:
Electrochemical performance is evaluated using CV, EIS, and Tafel polarization tests.
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transmission electron microscope
Tecnai G2 F20 S TWIN
FEI
Used for observing the morphologies and structure of the Bi2S3/CNFs composite.
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X-ray powder diffractometer
D/Max 2400
Rigaku
Used for testing the crystallographic phases of the materials.
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X-ray photoelectron spectroscopy
ESCALAB250
Thermo-VG
Used for analyzing the electronic structure and elements in the materials.
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scanning electron microscopy
S-4800
Hitachi
Used for observing the morphologies and structure of the Bi2S3/CNFs composite.
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electrospinning setup
Used for the synthesis of carbon nanofibers.
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hydrothermal synthesis apparatus
Used for the synthesis of Bi2S3 nanoparticles.
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electrochemical workstation system
CHI 660E
Chenhua
Used for all the electrochemical measurements.
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solar simulator
16S-002
SolarLight
Used for the current density-voltage test of the DSSCs.
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