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4D Visualization of a Cathode Catalyst Layer in a Polymer Electrolyte Fuel Cell by 3D Laminography–XAFS
Author(s) -
Saida Takahiro,
Sekizawa Oki,
Ishiguro Nozomu,
Hoshino Masato,
Uesugi Kentaro,
Uruga Tomoya,
Ohkoshi Shinichi,
Yokoyama Toshihiko,
Tada Mizuki
Publication year - 2012
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201204478
Subject(s) - x ray absorption fine structure , cathode , materials science , catalysis , electrolyte , polymer , layer (electronics) , electrode , visualization , absorption (acoustics) , membrane electrode assembly , chemical engineering , nanotechnology , composite material , chemistry , computer science , spectroscopy , organic chemistry , physics , quantum mechanics , artificial intelligence , engineering
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.