Graphene counter electrode for dye-sensitized solar cell and manufacturing method of graphene counter electrode

The invention relates to a graphene counter electrode for a dye-sensitized solar cell, belonging to the technical field of solar cells. The graphene counter electrode comprises a transparent substrate, a graphene conducting layer and a graphene catalyst layer, wherein the graphene conducting layer is arranged on the surface of the transparent substrate, the graphene catalyst layer is arranged on the surface of the graphene conducting layer; the graphene catalyst layer is manufactured by coating slurry formed by mixing graphene (or graphene-doped) powder, hydroxyethylcellulose and a volatile organic solvent on the graphene conducting layer, and drying a mixture. According to the graphene counter electrode disclosed by the invention, graphene is taken as a conducting layer to replace a traditional conducting thin film, such as ITO (Indium Tin Oxide); graphene powder with very large specific surface area as a catalyst layer takes the place of traditional metal platinum particles and has better catalysis effect. The graphene counter electrode disclosed by the invention has the characteristics of large area, low cost and high efficiency, the manufacturing process of the graphene counter electrod is simple, and a flexible electrode is conveniently obtained, thus the invention is hopeful to prompt the application of the graphene in the solar field, in particular the aspect of flexible dye-sensitized solar cells.