▎ 摘　　要

NOVELTY - Manufacture of nitrogen-doped reduced graphene involves preparing a dispersion by mixing a compound (a) containing graphene oxide and nitrogen compound in a solvent, ultrasonicating-processing the dispersion, filtering and drying the processed dispersion, heating the reduced graphene, and classifying the reduced graphene. USE - Manufacture of nitrogen-doped reduced graphene used for manufacturing counter electrode for dye-sensitized solar cell (all claimed). ADVANTAGE - The method enables simple and economical manufacture of high-purity nitrogen-doped reduced graphene with high productivity and high yield. The nitrogen-doped reduced graphene enables manufacture of counter electrode having excellent stability and corrosion resistance. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for manufacture of counter electrode, which involves dispersing the nitrogen-doped reduced graphene in a solvent to prepare a dispersion, coating the dispersion on a conductive transparent substrate to form a coating layer, and surface-treating the coating layer.