Polymer electrolyte composition and dye-sensitized solar cell containing the same
View Patent ↗Disclosed is a polymer electrolyte composition, a gel-type polymer electrolyte obtained by mixing the same at normal temperature, and a dye-sensitized solar cell containing the electrolyte. Since the poly(alkylene carbonate)-based polymer is included, a crosslinking process by radiation of heat or UV is not required when the polymer electrolyte is manufactured, such that a manufacturing process is simple. Accordingly, the polymer electrolyte is useful for mass production of a solar cell and maintained in a uniform state without a phase separation between two components due to excellent affinity between the polymer and the organic solvent included in the electrolyte, and has excellent electrode-electrolyte interface property in the solar cell due to an adhesive property of the gelled polymer electrolyte.
1. A polymer electrolyte composition for a dye-sensitized solar cell comprising:
a poly(alkylene carbonate)-based polymer containing a repeating unit represented by the following Formula 1;
a high boiling point solvent;
a redox derivative; and
a ceramic particle:
wherein R is a hydrogen atom; a straight chained, cyclic, or branched chained alkyl group having 1 to 20 carbon atoms, which may include a hetero element such as oxygen, sulfur or nitrogen and fluorine; or an aromatic alkyl group having 6 to 20 carbon atoms.
2. The polymer electrolyte composition of claim 1 , wherein a weight average molecular weight of the poly(alkylene carbonate)-based polymer is 1,000 to 1,000,000.
3. The polymer electrolyte composition of claim 1 , wherein the poly(alkylene carbonate)-based polymer is poly(ethylene carbonate), polypropylene carbonate), poly(butylenes carbonate), poly(cyclohexyl carbonate), or a mixture or a derivative thereof.
4. The polymer electrolyte composition of claim 1 , wherein a content of the poly(alkylene carbonate)-based polymer is 5 to 95 wt %.
5. The polymer electrolyte composition of claim 1 , wherein the high boiling point solvent is a single material or a mixture selected from cyclic carbonate, lactones, and normal temperature molten salts.
6. The polymer electrolyte composition of claim 1 , wherein the high boiling point solvent is a single material or a mixture selected from methylene carbonate, ethylene carbonate, propylene carbonate, a cyclic derivative thereof, gamma-butyrolactone, and an ionic liquid.
7. The polymer electrolyte composition of claim 1 , wherein the redox derivative provides a redox couple of I − /I 3 − .
8. The polymer electrolyte composition of claim 1 , wherein the ceramic particle is a single material or a mixture selected from Al 2 O 3 , SiO 2 , TiO 2 , SnO 2 , CeO 2 , ZrO 2 , BaTiO 3 , Y 2 O 3 , and zeolite.
9. The polymer electrolyte composition of claim 1 , wherein an average particle diameter of the ceramic particle is 0.0001 to 1,000 μm.
10. The polymer electrolyte composition of claim 1 , wherein a content of the ceramic particle is 2 to 20 wt %.
11. A gel-type polymer electrolyte for a dye-sensitized solar cell obtained by mixing the polymer electrolyte composition of claim 1 to perform gelling at normal temperature.
12. A dye-sensitized solar cell comprising:
the gel-type polymer electrolyte of claim 11 .
13. A dye-sensitized solar cell comprising:
the polymer electrolyte composition of claim 1 .