NOVELTY - Preparation of oxidized graphene nano-graphite composite electrode involves preparing graphene oxide, mixing 98 %mass sulfuric acid, flake graphite and sodium nitrate, cooling, adding potassium manganese oxide, naturally cooling, adding hydrogen peroxide, removing upper clear liquid, cleaning product using water, drying product in oven, grinding into powder, mixing ethanol and water, obtaining solution (a), mixing oxidized graphite alkene, surfactant, ethanol and water, mixing uniformly the solutions and stirring.    USE - Preparation of oxidized graphene nano-graphite composite electrode (claimed) used for dye-sensitized solar cell.    ADVANTAGE - The oxidized graphene nano-graphite composite electrode is economically prepared with improved electrode filling factor.    DETAILED DESCRIPTION - Preparation of oxidized graphene nano-graphite composite electrode involves preparing graphene oxide, mixing 98 %mass sulfuric acid, flake graphite and sodium nitrate, cooling under ice water bath at 0 degrees C under the strong stirring, slowly adding potassium manganese oxide at 20 degrees C or less for 10-50 minutes, then heating at 35-45 degrees C, stirring for 60 minutes, then slowly adding water, raising the temperature at 98 degrees C for 15 minutes, naturally cooling, adding hydrogen peroxide, standing and removing the upper clear liquid, washing the precipitate with hydrochloric acid concentration of 10 volume%, cleaning product using water until the pH is 7, finally drying product in the oven at 50 degrees C, grinding into powder, mixing ethanol and water, obtaining solution (a), mixing oxidized graphite alkene, surfactant, ethanol and water, obtaining solution (b), mixing uniformly nano-graphite powder having particle diameter of 20-100 nm, surfactant, ethanol and water, obtaining solution (C), mixing uniformly the solutions (a, b, c) and stirring for 24 hours. The molecular weight of graphene oxide nano-graphite powder composite is 100000-1000000. An INDEPENDENT CLAIM is included for oxidized graphene nano-graphite composite electrode.