Application of X-ray photoelectron spectroscopy to studies of electrodes in fuel cells and electrolyzers

•Industrial applications of fuel cells and electrolyzers require active and durable materials.•XPS investigates properties of materials for application in fuel cells and electrolyzers.•XPS follows the evolution of changes in the surface chemistry of the electrodes.•Types of chemical information and...

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Bibliographic Details
Published in:Journal of electron spectroscopy and related phenomena 2019-02, Vol.231, p.127-139
Main Authors: Artyushkova, K., Serov, A., Doan, H., Danilovic, N., Capuano, C.B., Sakamoto, T., Kishi, H., Yamaguchi, S., Mukerjee, S., Atanassov, P.
Format: Article
Language:English
Subjects:
Catalyst layers
Durability
Electrocatalysts
Electrolyzers
Fuel cells
XPS
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Summary:•Industrial applications of fuel cells and electrolyzers require active and durable materials.•XPS investigates properties of materials for application in fuel cells and electrolyzers.•XPS follows the evolution of changes in the surface chemistry of the electrodes.•Types of chemical information and challenges in surface analysis of electrodes discussed. The activity and stability of catalysts used in anodes and cathodes in fuel cells and electrolyzers is a vital factor for practical industrial applications. To improve performance characteristics, it is essential to link the structure and composition of the catalyst on the electrodes to electrochemical performance and durability. The investigation of the durability of materials for application in fuel cells and electrolyzers is a particularly important task. Application of x-ray photoelectron spectroscopy (XPS) to probing the chemistry of catalyst layers and their degradation is becoming a central analytical approach due to quantitative chemical information it provides. Herein we present several cases of application of high-resolution XPS for analysis of the chemistry of electrodes and changes that are occurring during operation in several technological platforms, such as proton-exchange membrane fuel cells (PEMFCs), alkaline membrane fuel cells (AEMFC), direct methanol fuel cells (DMFC), direct hydrazine fuel cells (DHFC) and water electrolyzers (WE). Challenges of analyzing surface chemistry of electrodes and approaches to address them are discussed.
ISSN:0368-2048
1873-2526
DOI:10.1016/j.elspec.2017.12.006