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In order to enhance the dispersion property of Fe3O4 nanoparticles in Agarose-based magnetic polymer electrolytes for Dye-sensitized solar cell (DSSC), PEG200 was choosen to modify the magnetic polymer electrolytes. The electrochemical properties of polymer electrolytes with different content of PEG200 were studied by Electrochemical Impedance Spectroscopy (EIS). It was found that the electrolyte has an optimal conductivity of 2.88×10-3 Scm-1 when the mass fraction of PEG200 is 61.8wt% of Fe3O4 nanoparticles in the electrolyte. The electron lifetime of electron charges in photoanode increased and then decreased when the concentration of PEG200 increased. At the concentration of PEG200 of 68.3wt%, the cell reached the largest electron lifetime.

A magnetic polymer electrolyte using agarose as polymer matrix, NMP as solvent and NiO nanoparticles as modifier was investigated and employed in the dye-sensitized solar cell (DSSC) in this paper. The influence of NiO nanoparticles content on magnetic polymer electrolyte was characterized by SEM and ionic conductivity test. The photovoltaic properties of the corresponding DSSCs were studied by photovoltaic performance tests. The results showed that the surface morphology of the polymer electrolyte with 1.0wt% NiO nanoparticles was smooth and this magnetic polymer electrolyte showed the maximum conductivity (2.43×10-3S•cm-1). The optimal photoelectric efficiency of 1.63% was achieved at the NiO nanoparticles content of 1.0wt%.

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