研究目的
Investigating the effects of 2-amino-4,6-dimethoxypyrimidine on PVDF/KI/I2-based solid polymer electrolytes for dye-sensitized solar cell application.
研究成果
The 20% 2-amino-4,6-dimethoxypyrimidine-doped PVDF/KI/I2-based SPE showed the highest ionic conductivity value of 4.91 × 10?5 S cm?1 and the highest PCE of 2.5% in DSSCs. The addition of 2-amino-4,6-dimethoxypyrimidine decreased the crystallinity of SPEs, which is responsible for the increased ionic conductivity and PCE.
研究不足
The ionic conductivity of SPEs is limited by crystalline phases, segmental mobility, and the concentration of charge carriers. The study focuses on optimizing the best conducting polymer electrolyte and studying the characteristics of the fabricated DSSCs.
1：Experimental Design and Method Selection:
The SPEs were prepared by dissolving PVDF, KI, I2, and 2-amino-4,6-dimethoxypyrimidine in DMF under continuous stirring at 80°C until homogeneous polymer electrolyte solutions were obtained. The solutions were then poured into glass petri dishes and the solvent was evaporated using a vacuum oven at 60°C for 12 h.
2：Sample Selection and Data Sources:
Different weight ratios (0%, 10%, 20%, 30%, 40%, and 50%) of 2-amino-4,6-dimethoxypyrimidine-doped PVDF/KI/I2-based SPEs were prepared.
3：List of Experimental Equipment and Materials:
A Bruker Advance D8 powder x-ray diffractometer, an Ametek (model V3-500) electrochemical workstation, and a JEOL 6390 scanning electron microscope were used for characterization.
4：Experimental Procedures and Operational Workflow:
The SPEs were characterized by PXRD, AC impedance, and SEM analyses. The ionic conductivity was calculated using AC impedance spectra.
5：Data Analysis Methods:
The ionic conductivity was calculated using the equation σ = t/(RbA), where 'A' is the area of the electrode covered by the SPE, 'Rb' is the bulk resistance, and 't' is the thickness of the SPE.
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