Phase inversion process to prepare quasi‐solid‐state electrolyte for the dye‐sensitized solar cells
Journal of Applied Polymer Science (Impact Factor: 1.77). 07/2008; 109(2):1369 - 1375. DOI: 10.1002/app.28208
A quasi-solid-state electrolyte for the dye-sensitized solar cells was prepared following the phase inversion process. The microporous polymer electrolyte based on poly(vinylidene fluoride-co-hexafluoropropylene) (P(VDF-HFP)) hybrid with different amount of TiO2 nanoparticles were prepared. The surface morphologies, the differential scanning calorimetry, and the ionic conductivity of the microporous polymer electrolyte were tested and analyzed. The results indicated that the microporous polymer electrolyte with TiO2 nanoparticles modification exhibited better ionic conductivity compared with the original P(VDF-HFP) polymer electrolyte. The optimal ionic conductivity of 0.8 mS cm−1 is obtained with the 30 wt % TiO2 nanoparticles modification. When assembled with the 30 wt % TiO2 nanoparticles modified quasi-solid-state electrolyte, the dye-sensitized TiO2 nanocrystalline solar cell exhibited the light to electricity conversion efficiency of 2.465% at light intensity of 42.6 mW cm−2, much better than the performance of original P(VDF-HFP) microporous polymer electrolyte DSSC. © 2008 Wiley Periodicals, Inc. J Appl Polym Sci, 2008
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ABSTRACT: Some of the latest developments and potential trends in the field of vinylidene fluoride (VDF) and applications of VDF-containing polymers and copolymers are discussed. A number of syntheses have been found suitable to prepare VDF for different applications. It is expected that new fluropolymeric materials and new curing chemistry will be developed in the future due to continued focus on severe service conditions and improvements in wide range of temperature damping characteristics and low-temperature resilience. Blends of fluoropolymers with other polymers and recyclability features are also expected to contribute to their successful application in many engineering and aggressive service environments. VDF has gained significance as one of the most suitable fluoropolymers, as it is a versatile, nontoxic, and environmentally friendly gaseous monomer that can be easily homopolymerized and copolymerized in the presence of radicals.
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ABSTRACT: Polymer electrolytes or gel-type polymer electrolytes are interesting alternatives to substitute liquid electrolytes in dye-sensitized solar cells (DSSC). The interest in this research field is growing, reflected in the increased number of papers published each year concerning these materials. This chapter presents a brief review of the history and development of polymer electrolytes aiming at the application in DSSC. Recent improvements achieved by modifications of the composition and by introduction of additives such as inorganic nanofillers, organic molecules and ionic liquids are described. The stability of DSSC assembled with these materials, and scaling-up of such devices are also discussed.
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