• 专利标题:   Preparation of graphene/hollow carbon sphere composite material for e.g. supercapacitor involves mixing phenol solution with aqueous solution of uniform polymer beads, vigorously stirring, and adding hexamethylene tetramine.
  • 专利号:   CN103253657-A, CN103253657-B
  • 发明人:   ZHANG D, YAN T, ZHANG J, SHI L, WANG H
  • 专利权人:   UNIV SHANGHAI
  • 国际专利分类:   C01B031/02, C01B031/04
  • 专利详细信息:   CN103253657-A 21 Aug 2013 C01B-031/04 201425 Pages: 5 Chinese
  • 申请详细信息:   CN103253657-A CN10175786 14 May 2013
  • 优先权号:   CN10175786

▎ 摘  要

NOVELTY - A graphene/hollow carbon sphere composite material is prepared by mixing 0.8-1.2 wt.% phenol solution with 3-5 wt.% aqueous solution of uniform polymer beads, vigorously stirring, adding hexamethylene tetramine in which mass ratio phenol:polymer beads:hexamethylene tetramine is 1:0.8-2.4:0.7, transferring reaction solution to PTFE reactor to react at 130-160 degrees C for 4-5 hours, cooling to room temperature, washing by centrifugation to obtain precursor hollow carbon spheres, and adding 3-5 wt.% aqueous solution of hollow carbon sphere precursor aqueous solution into graphite oxide. USE - Preparation of graphene/hollow carbon sphere composite material for supercapacitor, capacitive desalting, lithium ion battery, and electrochemistry field. ADVANTAGE - The composite material has unique three-dimensional porous structure and excellent conductive property. Preparation process is simple and easy to control. DETAILED DESCRIPTION - A graphene/hollow carbon sphere composite material is prepared by mixing 0.8-1.2 wt.% phenol solution with 3-5 wt.% aqueous solution of uniform polymer beads, vigorously stirring, adding hexamethylene tetramine in which mass ratio phenol:polymer beads:hexamethylene tetramine is 1:0.8-2.4:0.7, transferring reaction solution to PTFE reactor to react at 130-160 degrees C for 4-5 hours, cooling to room temperature, washing by centrifugation to obtain precursor hollow carbon spheres, adding 3-5 wt.% aqueous solution of hollow carbon sphere precursor aqueous solution into graphite oxide, ultrasonically mixing, filtering, drying, placing in tubular furnace, and performing 2-step calcination under protection of inert gas.