研究目的
To develop a novel composite material of Pt-Ni2P/CNs as a counter electrode for dye-sensitized solar cells (DSSCs) to enhance photovoltaic performance.
研究成果
The Pt-Ni2P/CNs composite exhibits superior electrocatalytic activity and charge-transfer ability, leading to a high power conversion efficiency of 9.11% in DSSCs, which is significantly higher than that of conventional Pt/CNs CEs. This study contributes to the development of low-cost and highly efficient catalytic materials for DSSCs.
研究不足
The study focuses on the synthesis and application of Pt-Ni2P/CNs as CEs for DSSCs, but the long-term stability and scalability of the synthesis method were not extensively discussed.
1：Experimental Design and Method Selection
Electrospun and solvothermal methods were used to synthesize Pt-Ni2P supported carbon nanofibers.
2：Sample Selection and Data Sources
Polyacrylonitrile (PAN), nickel (II) acetylacetonate [Ni(acac)2], trioctylphosphine (TOP), N, N-dimethylformamide (DMF), oleylamine (OAM), ethanol, and n-hexane were used as received without any further processing.
3：List of Experimental Equipment and Materials
X-ray powder diffractometer (D8-Advance, Bruker, Germany), X-ray photoelectron spectroscopy (XPS) (ESCALAB250 Thermo VG, America), scanning electron microscopy (SEM, JSM-7500, Hitachi, Japan), transmission electron microscopy (TEM, Tecnai G2 F20 S-TWIN, FEI, USA), electrochemical workstation (CHI 660E, Chenhua, Shanghai).
4：Experimental Procedures and Operational Workflow
The CNs were prepared by PAN and DMF using the electrostatic spinning method. Pt and Ni2P nanoparticles were grown on the surface of CNs through redox reaction. The CE was fabricated by spraying the mixture on FTO glasses and calcining in N2 atmosphere.
5：Data Analysis Methods
Cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), and Tafel polarization measurements were performed to evaluate the electrocatalytic activity and charge-transfer ability of the CEs.
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Scanning electron microscopy
JSM-7500
Hitachi
Examining shape and morphology of the composites.
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Transmission electron microscopy
Tecnai G2 F20 S-TWIN
FEI
Examining shape and morphology of the composites.
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X-ray powder diffractometer
D8-Advance
Bruker
Recording XRD patterns to analyze crystal structure.
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X-ray photoelectron spectroscopy
ESCALAB250
Thermo VG
Determining electronic structure and coated amount of Pt, Ni and P.
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Electrochemical workstation
CHI 660E
Chenhua
Performing cyclic voltammetry (CV) measurements.
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