• 专利标题:   Method for preparing three-dimensional nitrogen-doped graphene for use as catalyst for e.g. catalytic oxygen reduction in e.g. fuel cell, involves mixing (2,5-benzimidazole) solution with magnesium oxide template, and pyrolyzing.
  • 专利号:   CN106744847-A, CN106744847-B
  • 发明人:   LI Z, WANG S, YUE P, ZHANG T
  • 专利权人:   UNIV SHANDONG TECHNOLOGY, UNIV SHANDONG TECHNOLOGY
  • 国际专利分类:   C01B032/184
  • 专利详细信息:   CN106744847-A 31 May 2017 C01B-032/184 201752 Pages: 7 Chinese
  • 申请详细信息:   CN106744847-A CN11235508 28 Dec 2016
  • 优先权号:   CN11235508

▎ 摘  要

NOVELTY - The method for preparing three-dimensional nitrogen-doped graphene, involves mixing (2,5-benzimidazole) solution with magnesium oxide template, evaporating under argon protection, pyrolyzing, removing template to prepare final product. The polymer chain of poly (2,5 benzimidazole) is composed of aromatic rigid benzimidazole composition and molecules containing nitrogen-rich imidazole ring and terminal amino groups. The poly (2,5 benzimidazole) solution and magnesium oxide template with different particle size are mixed according to different mass ratio. USE - Method for preparing three-dimensional nitrogen-doped graphene for use as catalyst for catalytic oxygen reduction in metal air battery and fuel cell, and catalyst for catalytic electrolysis of water and oxygen precipitation reaction in electrode material of supercapacitor. DETAILED DESCRIPTION - Method for preparing three-dimensional nitrogen-doped graphene, involves mixing (2,5-benzimidazole) solution with magnesium oxide template, evaporating under argon protection, pyrolyzing, removing the template to prepare three-dimensional nitrogen-doped graphene. The polymer chain of poly (2,5 benzimidazole) is composed of aromatic rigid benzimidazole composition and molecules containing nitrogen-rich imidazole ring and terminal amino groups. The poly (2,5 benzimidazole) solution and magnesium oxide template with different particle size are mixed according to different mass ratio, so that the planar benzimidazole ring is regularly arranged on the surface of template, and the pyrolysis reaction is carried out to form nitrogen-doped graphene structure. The particle size, pyrolysis temperature, pore size, structure and other factors has an important impact on the formation of nitrogen-doped graphene layer. The three-dimensional nitrogen-doped graphene is used as catalyst for catalytic oxygen reduction in metal air battery and fuel cell, and catalyst for catalytic electrolysis of water and oxygen precipitation reaction in electrode material of supercapacitor.