DataVXChemNanoMatPaper
journal article·2022-04

Variation of Local Structure and Reactivity of Pt/C Catalyst for Accelerated Degradation Test of Polymer Electrolyte Fuel Cell Visualized by Operando 3D CT‐XAFS Imaging

Hirosuke Matsui, Nozomu Ishiguro, Yuanyuan Tan, Naoyuki Maejima, Yuta Muramoto, Tomoya Uruga, Kotaro Higashi, Duong‐Nguyen Nguyen, Hieu‐Chi Dam, Gabor Samjeské, Mizuki Tada

ChemNanoMat· Volume 8· Issue 4
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Source abstract

Abstract

Abstract In practical applications of polymer electrolyte fuel cells (PEFC), the wide variations of local structures and environment of electrocatalysts bring about complex reaction behaviours inside a membrane electrode assembly (MEA). The variations of local coordination structure and redox response of a Pt/C cathode catalyst in an MEA before and after a typical accelerated degradation test (ADT) were three‐dimensionally visualized by operando Pt LIII‐edge computed‐tomography X‐ray absorption fine structure (CT‐XAFS) imaging under PEFC operating conditions for the first time. The set of operando CT‐XANES and CT‐EXAFS analyses visualized changes in the local coordination structure and redox reactivity of the Pt catalyst by a typical ADT process.
Source: crossref · Quality: baseline

Research context

Energy storagePolymersCatalysis & surfaces

OpenAlex topics: Electrocatalysts for Energy Conversion · Machine Learning in Materials Science · Fuel Cells and Related Materials

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Department of Chemistry Graduate School of Science & Research Center for Materials Science & Integrated Research Consortium on Chemical Science & Institute for Advanced Study Nagoya University Furo, Chikusa, Nagoya, Aichi 464-8602 Japan

Institute of Multidisciplinary Research for Advanced Materials Tohoku University Katahira, Aoba, Sendai 980-8577 Japan

Innovation Research Center for Fuel Cells The University of Electro-Communications Chofu, Tokyo 182-8585 Japan

Japan Synchrotron Radiation Research Center SPring-8 Koto, Sayo, Hyogo 679-5198 Japan

School of Knowledge Science Japan Advanced Institute of Science and Technology Asahidai, Nomi, Ishikawa 923-1292 Japan

Funding

New Energy and Industrial Technology Development Organization · Kao Foundation for Arts and Sciences · Nagoya University · Ministry of Education, Culture, Sports, Science and Technology

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