Producing efficient and cost-effective fuel cell systems and water electrolyzers is then fundamental for promoting the spread of green hydrogen generation and use. In this scenario, fuel cell technology remarkably improved in the last decades, promoting Proton Exchange Membrane Fuel Cells (PEMFCs) use in the automotive and in transportation sectors. Nonetheless, the complex architecture of fuel cells and electrolyzers, still slows down the research and development required for improving their efficiency and lifetime, and contemporary reducing their production costs, which are still strongly bounded to the cost of catalyst materials. Important achievements in optimizing fuel cell architecture and/or catalyst loading, were obtained thanks to analysis carried out in-operando analysis carried out at synchrotron radiation facilities, where important insights about fuel cell operation and degradation were revealed. In particular, Small Angle X-Ray Scattering (SAXS) is suitable for revealing catalyst morphological evolution, while X-Ray Absorption Spectroscopy (XAS) allows to depict reaction kinetics and to quantify the degree of catalyst oxidation.
A unitized reversible fuel cell for in operando SAXS and XAS analysis for fuel cells and electrolyzers
Bogar M.;Taccani R.;
2023-01-01
Abstract
Producing efficient and cost-effective fuel cell systems and water electrolyzers is then fundamental for promoting the spread of green hydrogen generation and use. In this scenario, fuel cell technology remarkably improved in the last decades, promoting Proton Exchange Membrane Fuel Cells (PEMFCs) use in the automotive and in transportation sectors. Nonetheless, the complex architecture of fuel cells and electrolyzers, still slows down the research and development required for improving their efficiency and lifetime, and contemporary reducing their production costs, which are still strongly bounded to the cost of catalyst materials. Important achievements in optimizing fuel cell architecture and/or catalyst loading, were obtained thanks to analysis carried out in-operando analysis carried out at synchrotron radiation facilities, where important insights about fuel cell operation and degradation were revealed. In particular, Small Angle X-Ray Scattering (SAXS) is suitable for revealing catalyst morphological evolution, while X-Ray Absorption Spectroscopy (XAS) allows to depict reaction kinetics and to quantify the degree of catalyst oxidation.Pubblicazioni consigliate
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