Amphiphilic poly(vinyl chloride)-g-poly(oxyethylene methacrylate) graft polymer electrolytes: Interactions, nanostructures and applications to dye-sensitized solar cells

作者：Roh Dong Kyu; Park Jung Tae; Ahn Sung Hoon; Ahn Hyungju; Ryu Du Yeol; Kim Jong Hak^*

来源：Electrochimica Acta, 2010, 55(17): 4976-4981.

DOI：10.1016/j.electacta.2010.03.106

• Atom transfer radical polymerization (ATRP)
• Graft copolymer
• Polymer electrolyte
• Dye-sensitized solar cell (DSSC)
• Conductivity

An amphiphilic graft copolymer, i.e. poly(vinyl chloride)-graft-poly(oxyethylene methacrylate) (PVC-g-POEM) comprised of a PVC backbone and POEM side chains was synthesized via atom transfer radical polymerization (ATRP) and complexed with a salt for dye-sensitized solar cell (DSSC) applications. The coordinative interactions and structural changes of polymer electrolytes were investigated using FT-IR spectroscopy, wide angle X-ray scattering (WAXS) and differential scanning calorimetry (DSC). Small angle X-ray scattering (SAXS) and transmission electron microscopy (TEM) revealed that the d-spacing between PVC domains was significantly increased upon the introduction of metal salt, ionic liquid and oligomer, indicating their selective confinement in the hydrophilic POEM domains. The ion-conducting POEM domains were well interconnected, resulting in high ionic conductivity (similar to 10(-4) S/cm at 25 degrees C) and energy conversion efficiency (similar to 5.0% at 100 mW/cm(2)) in the solid-state.

• 出版日期2010-7-1