• 文献标题:   N-doped crumpled graphene: bottom-up synthesis and its superior oxygen reduction performance
  • 文献类型:   Article
  • 作  者:   ZHANG GX, JIN XY, LI HY, WANG L, HU CJ, SUN XM
  • 作者关键词:   dehalogenation, crumpled graphene, diffussion, oxygen reduction reaction
  • 出版物名称:   SCIENCE CHINAMATERIALS
  • ISSN:   2095-8226 EI 2199-4501
  • 通讯作者地址:   State Key Lab Chem Resource Engn
  • 被引频次:   30
  • DOI:   10.1007/s40843-016-5059-5
  • 出版年:   2016

▎ 摘  要

The crumpled graphene (CrG) was fabricated by applying defluorination of polyvinylidenefluoride (PVDF) on highly curved surface of CaC2 particle through bottom-up synthetic strategy. The limited reaction depth between PVDF and CaC2 leads to the formation of CrG with thin layer (3-6 layer graphene) and reasonable high specific surface area (similar to 324.8 m(2) g(-1)). CrG with N incorporation (N-CrG) was applied as electrode material for reducing oxygen (i.e., oxygen reduction reaction, ORR) in alkaline, showing close onset potential to that of Pt/C and better mass-diffusion behavior. Surprisingly, with increased mass loading of catalysts, N-CrG exhibits steady current increase while Pt/C shows clear current plateau. Meanwhile, the N-CrG sample reveals high cycling stability and tolerance to contaminant, demonstrating its high potential for practical applications. Additionally, the bottom-up synthetic pathway to CrG via polymer dehalogenation on solid alkaline may find more applications which require controlled morphology and thickness of deposited thin graphitic carbon layers.