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  • 专利标题:   Preparing graphene modified activated carbon composite for supercapacitor, involves utilizing graphene oxide sol and petroleum coke as raw materials to obtain graphene composite activated carbon by pre-activation treatment.
  • 专利号:   CN105800613-A
  • 发明人:   LIN W, WU T, ZHANG G, QI Z, DONG H, SUN Q
  • 专利权人:   FANGDA CARBON NEW MATERIAL TECHNOLOGY CO
  • 国际专利分类:   C01B031/12, H01G011/34
  • 专利详细信息:   CN105800613-A 27 Jul 2016 C01B-031/12 201669 Pages: 8 Chinese
  • 申请详细信息:   CN105800613-A CN10239022 18 Apr 2016
  • 优先权号:   CN10239022

▎ 摘　　要

NOVELTY - Preparing graphene modified activated carbon composite involves utilizing graphene oxide sol and petroleum coke as raw materials to obtain graphene composite activated carbon by pre-activation treatment, activation treatment and post-treatment. The petroleum coke is pulverized in ball mill and sieved to obtain 300-400 meshes raw material. The particle size is controlled at 20-50 mu m. The concentration of the graphene sol is controlled at 5-20 mg/ml. The obtained raw materials are dispersed and mixed in polar solvent. The mass ratio of the graphene sol and the petroleum coke is 1-10%. USE - Method for preparing graphene modified activated carbon composite for supercapacitor (claimed). ADVANTAGE - The method enables to prepare graphene modified activated carbon composite that has high conductivity, good performance, large area and high capacity. DETAILED DESCRIPTION - Preparing graphene modified activated carbon composite involves utilizing graphene oxide sol and petroleum coke as raw materials to obtain graphene composite activated carbon by pre-activation treatment, activation treatment and post-treatment. The petroleum coke is pulverized in ball mill and sieved to obtain 300-400 meshes raw material. The particle size is controlled at 20-50 mu m. The concentration of the graphene sol is controlled at 5-20 mg/ml. The obtained raw materials are dispersed and mixed in polar solvent. The mass ratio of the graphene sol and the petroleum coke is 1-10%. The polar solvent is mixed with potassium hydroxide in mass ratio of 1:2-3.5. The alkali coal mass ratio is calculated based on the mass of the petroleum coke. The processed raw materials are heated and stirred at 90-100 degrees C. The solvent is dried and raw materials are added in activation furnace. The raw materials are heated to 700-850 degrees C under inert atmosphere for 5-60 minutes. The obtained product is cooled, and washed with boiling water, acid and deionized water to obtain neutral product. The obtained product is dried to obtain activated carbon.