A Versatile Electrochemical Cell for Operando XAS

In situ and operando X‐ray absorption spectroscopy (XAS) provides fundamental insight into the working principles of electrocatalysts and is an important tool for future catalyst development. However, the design of an operando XAS electrocatalytic cell is not facile, and researchers designing cells,...

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Bibliographic Details
Published in:ChemCatChem 2024-08, Vol.16 (15), p.n/a
Main Authors: Ostervold, Lars, Hoffman, Adam S., Thompson, David, Bare, Simon R., Clark, Ezra Lee
Format: Article
Language:English
Subjects:
Absorption spectroscopy
Catalysts
Cations
copper
Copper converters
Electrocatalysts
Electrochemical cells
electrochemistry
Electrolytic cells
Engineering drawings
Gas flow
Monitoring
Operando electrochemistry cell
Operando spectroscopy
Oxidation
Spectrum analysis
Substrates
X-ray absorption spectroscopy
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Summary:In situ and operando X‐ray absorption spectroscopy (XAS) provides fundamental insight into the working principles of electrocatalysts and is an important tool for future catalyst development. However, the design of an operando XAS electrocatalytic cell is not facile, and researchers designing cells, whether new cells or modifications to previous cells, often spend many hours on cell design before obtaining high‐quality XAS data. Here, we describe the design, with engineering drawings, and operation of a versatile XAS cell with options for gas flow, electrolyte flow, pH monitoring, temperature monitoring, and the ability to handle many catalyst forms (any catalyst that can be deposited onto a conductive X‐ray transparent substrate). We benchmarked XAS spectra collected using the new experimental cell to a previous cell design showing its ability to produce quality XAS data. We demonstrate the viability of this cell by providing insight into electrocatalysts by studying cation effects and show the tetrabutylammonium cation prevents bulk oxidation of copper. We hope the availability of this cell allows researchers to convert time typically spent on cell design to time spent on breakthroughs in electrocatalysis. An electrochemical cell for operando XAS measurements with options for gas flow, electrolyte flow, pH monitoring, temperature monitoring, and the ability to handle many catalyst forms (any catalyst that can be deposited onto a carbon substrate). CAD drawings and engineering drawings included.
ISSN:1867-3880
1867-3899
DOI:10.1002/cctc.202400072