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

doi:10.1002/anie.201204478

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 journal › Article › peer-review

55 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 language	English
Pages (from-to)	10311-10314
Number of pages	4
Journal	Angewandte Chemie - International Edition
Volume	51
Issue number	41
DOIs	https://doi.org/10.1002/anie.201204478
Publication status	Published - 2012 Oct 8
Externally published	Yes

Keywords

XANES
catalyst degradation
fuel cells
imaging
laminography

ASJC Scopus subject areas

Catalysis
Chemistry(all)

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10.1002/anie.201204478

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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.",

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AU - Saida, Takahiro

AU - Sekizawa, Oki

AU - Ishiguro, Nozomu

AU - Hoshino, Masato

AU - Uesugi, Kentaro

AU - Uruga, Tomoya

AU - Ohkoshi, Shin Ichi

AU - Yokoyama, Toshihiko

AU - Tada, Mizuki

PY - 2012/10/8

Y1 - 2012/10/8

N2 - 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.

AB - 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.

KW - XANES

KW - catalyst degradation

KW - fuel cells

KW - imaging

KW - laminography

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

Abstract

Keywords

ASJC Scopus subject areas

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