A novel catalyst layer with carbon matrix for Pt nanowire growth in proton exchange membrane fuel cells (PEMFCs)

Research output: Contribution to journalArticlepeer-review

Authors

  • Xianyong Yao
  • Kaihua Su
  • Sheng Sui
  • Liwei Mao
  • An He
  • Junliang Zhang

Colleges, School and Institutes

External organisations

  • Shanghai Jiao Tong University

Abstract

Novel catalyst layers for proton exchange membrane fuel cells (PEMFCs) were investigated by in-situ growing of Pt nanowires (Pt-NWs) on carbon matrix. The Pt-NWs grew on the matrix along the thickness direction with a length of 10-20nm and a diameter of 4nm. In-situ cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS) and polarization experiments were employed to characterize the electrochemical performance of the Pt-NWs electrodes. The results showed that the predominantly {111}-oriented facets and oxygen access of the Pt-NWs structure contribute to the higher performance in comparison with that of the conventional catalyst layers. This work is advantageous for fuel cell catalyst layer design by allowing the controlled modification of both Pt distribution and pore size.

Details

Original languageEnglish
Pages (from-to)12374-12378
Number of pages5
JournalInternational Journal of Hydrogen Energy
Volume38
Issue number28
Publication statusPublished - 1 Jan 2013

Keywords

  • Carbon matrix, Catalyst layers, In-situ growth, PEM fuel cells, Pt nanowires