• 文献标题:   Superior durability and stability of Pt electrocatalyst on N-doped graphene-TiO2 hybrid material for oxygen reduction reaction and polymer electrolyte membrane fuel cells
  • 文献类型:   Article
  • 作  者:   PARK C, LEE E, LEE G, TAK Y
  • 作者关键词:   hybrid material, oxygen reduction reaction orr, nitrogen doping, durability, polymer electrolyte membrane fuel cell
  • 出版物名称:   APPLIED CATALYSIS BENVIRONMENTAL
  • ISSN:   0926-3373 EI 1873-3883
  • 通讯作者地址:   Inha Univ
  • 被引频次:   10
  • DOI:   10.1016/j.apcatb.2019.118414
  • 出版年:   2020

▎ 摘  要

To accelerate the commercialization of polymer electrolyte membrane fuel cells (PEMFCs), studies on durable support materials that can replace conventional carbon-based supports are being conducted. In this study, we prepared N-doped TiO2 on the N-doped graphene hybrid material (NG-TiON) using a facile hydrothermal method to develop a support for a platinum catalyst with both high stability and electrical conductivity. Asprepared NG-TiON supports were characterized using transmission electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy, and thermogravimetric analysis. The stability of the Pt/NG-TiON catalyst was considerably improved compared to that of Pt/C, and their high oxygen reduction reaction (ORR) activities were similar. The durabilities of the Pt catalysts were investigated using the accelerated durability test. Single cell measurements revealed that Pt/NG-TiON has high stability and corrosion resistance with a performance degradation rate of only 9 % after 5000 accelerated durability test cycles while the performance of Pt/C decreased 83 %.