• 专利标题:   Preparing graphene, involves dispersing carbon source in phosphoric acid aqueous solution, heating, performing solid-liquid separation and drying, where carbon source comprises mixture of graphene oxide and/or graphite oxide.
  • 专利号:   CN110589809-A
  • 发明人:   WANG L, FEI W, LIU Z, LI J
  • 专利权人:   HARBIN INST TECHNOLOGY
  • 国际专利分类:   C01B032/182, C01B032/184, H01G011/32
  • 专利详细信息:   CN110589809-A 20 Dec 2019 C01B-032/182 202006 Pages: 10 Chinese
  • 申请详细信息:   CN110589809-A CN10601338 12 Jun 2018
  • 优先权号:   CN10601338

▎ 摘  要

NOVELTY - Method for preparing graphene, involves (a) dispersing carbon source directly to phosphoric acid aqueous solution, or uniformly dispersing carbon source in deionized water, adding phosphoric acid aqueous solution and uniformly mixing, and (b) performing heat treatment at 200-550 degrees C for 5-90 minutes, performing solid-liquid separation and drying to obtain graphene, where the carbon source in step (a) comprises mixture of graphene oxide and/or graphite oxide. USE - Method for preparing graphene. ADVANTAGE - The graphene has high-volume specific capacitance, excellent wettability and rate performance, high bulk density, is stable in cycle, and ensures 1.1-1.7 g/cm3 bulk density and 170-500 F/cm3 volume specific capacitance.