4D visualization of a cathode catalyst layer in a polymer electrolyte fuel cell by 3D laminography-XAFS

Takahiro Saida, Oki Sekizawa, Nozomu Ishiguro, Masato Hoshino, Kentaro Uesugi, Tomoya Uruga, Shin Ichi Ohkoshi, Toshihiko Yokoyama, Mizuki Tada

Research output: Contribution to journalArticlepeer-review

50 Citations (Scopus)

Abstract

Four-dimensional visualization of Pt/C cathode catalyst layers in membrane electrode assemblies (MEAs) were successfully performed by a newly developed method, namely laminography-XAFS (X-ray absorption fine structure). The method not only enables imaging of the 3D distribution of Pt nanoparticle cathode catalysts, but also the chemical states of the Pt catalysts in fresh and degraded MEAs in a nondestructive manner.

Original languageEnglish
Pages (from-to)10311-10314
Number of pages4
JournalAngewandte Chemie - International Edition
Volume51
Issue number41
DOIs
Publication statusPublished - 2012 Oct 8

Keywords

  • XANES
  • catalyst degradation
  • fuel cells
  • imaging
  • laminography

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)

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