Acta Phys. -Chim. Sin. ›› 2012, Vol. 28 ›› Issue (03): 585-590.doi: 10.3866/PKU.WHXB201112302

• ELECTROCHEMISTRY AND NEW ENERGY • Previous Articles     Next Articles

Electrochemical Properties of an Agarose-Based Magnetic Polymer Electrolyte in Dye-Sensitized Solar Cells

GUO Xue-Yi, YI Peng-Fei, WANG Wei-Jia, YANG Ying   

  1. School of Metallurgical Science and Engineering, Central South University, Changsha 410083, P. R. China
  • Received:2011-09-15 Revised:2011-12-12 Published:2012-02-23
  • Contact: YANG Ying
  • Supported by:

    The project was supported by the National Natural Science Foundation of China (61006047).

Abstract: In order to enhance the dispersion of Fe3O4 nanoparticles in polymer electrolytes for dyesensitized solar cell (DSSC) applications, the ionic conductivity of the polymer electrolytes with different small molecular surfactants was studied. The surfactants used were polyethylene glycol (PEG200), Triton X-100, acetyl acetone, and mixture of these three active agents at 1%(w) doping concentration of Fe3O4 nanoparticles in electrolyte. Comparison of the electrochemical properties of Fe3O4-doped polymer electrolytes containing different surfactants showed that PEG200 was suitable for modifying Fe3O4 nanoparticles to disperse in agarose-based polymer electrolytes. When the mass fraction of PEG200 was 61.8%(w), the electrolyte had excellent conductivity (2.88×10-3 S·cm-1). Electrochemical impedance spectra (EIS) revealed that when the concentration of PEG200 increased, the electron lifetime and combination resistance of a dye-sensitized solar cell increase initially and then decreasd. The longest electron lifetime and the largest combination resistance were achieved when the concentration of PEG200 was 68.3%(w).

Key words: Magnetical polymer electrolyte, Agarose, Nano-Fe3O4, PEG200, Dye-sensitized solar cell


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