Proton-exchange membrane fuel cell design for in-situ depth-sensitive X-ray absorption spectroscopy

被引：5

作者：

Ronovsky, Michal ^{[1
,3
]}

Myllymaeki, Mila ^{[2
]}

Watier, Yves ^{[1
]}

Glatzel, Pieter ^{[1
]}

Strasser, Peter ^{[3
]}

Bonastre, Alex Martinez ^{[4
]}

Drnec, Jakub ^{[1
]}

机构：

[1] ESRF The European Synchrotron, Beamline ID31, Grenoble, France

[2] Univ Helsinki, Helsinki, Finland

[3] Tech Univ Berlin, Berlin, Germany

[4] Johnson Matthey Technol Ctr, Blounts Court, Sonning Common RG4 9NH, England

来源：

JOURNAL OF POWER SOURCES | 2024年 / 592卷

关键词：

XAS; PEMFC; Cation poisoning; cell design; Depth-profiling; RU ANODE ELECTROCATALYST; OPERATING-CONDITIONS; NAFION; PLATINUM; DEGRADATION; DISSOLUTION; DEPOSITION; MIGRATION; XANES;

D O I：

10.1016/j.jpowsour.2023.233906

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We have built a proton exchange membrane hydrogen fuel cell optimized for angle-resolved X-ray absorption spectroscopy. This cell allows in-situ fluorescence measurements during electrochemical operation with minimal trade-offs in cell performance while reaching automotive current densities. The fluorescence signal can be collected from wide angles to extract depth information from the probed atomic species such as Pt, Co, and Ni, crucial to highly efficient FC. This cell is designed to assess the connection between the ionic drag/diffusion and the performance loss by following the real-time movement of the species through the membrane electrode assembly.

引用

页数：6

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