In Situ and Operando X-ray Scattering Methods in Electrochemistry and Electrocatalysis

OM Magnussen, J Drnec, C Qiu, I Martens… - Chemical …, 2024 - ACS Publications
Electrochemical and electrocatalytic processes are of key importance for the transition to a
sustainable energy supply as well as for a wide variety of other technologically relevant …

Revealing in-plane movement of platinum in polymer electrolyte fuel cells after heavy-duty vehicle lifetime

K Khedekar, A Zaffora, M Santamaria, M Coats… - Nature Catalysis, 2023 - nature.com
Fuel cell heavy-duty vehicles (HDVs) require increased durability of oxygen-reduction-
reaction electrocatalysts, making knowledge of realistic degradation mechanisms critical …

Contrast variation method applied to structural evaluation of catalysts by X-ray small-angle scattering

A Mufundirwa, Y Sakurai, M Arao, M Matsumoto… - Scientific Reports, 2024 - nature.com
In the process of developing carbon-supported metal catalysts, determining the catalyst
particle-size distribution is an essential step, because this parameter is directly related to the …

Monitoring the Structural Changes in Iridium Nanoparticles during Oxygen Evolution Electrocatalysis with Operando X-ray Total Scattering

RK Pittkowski, S Punke, AS Anker… - Journal of the …, 2024 - ACS Publications
Understanding the structure of nanoparticles under (electro) catalytic operating conditions is
crucial for uncovering structure–property relationships. By combining operando X-ray total …

Monitoring the Morphological Changes of Skeleton‐PtCo Electrocatalyst during PEMFC Start‐Up/Shut‐Down probed by in situ WAXS and SAXS

M Janssen, J Drnec, I Martens, J Quinson… - …, 2024 - Wiley Online Library
Advanced in situ analyses are indispensable for comprehending the catalyst aging
mechanisms of Pt‐based PEM fuel cell cathode materials, particularly during accelerated …

Shedding Light on Electrocatalysts: Practical Considerations for Operando Studies with High‐Energy X‐Rays

RK Pittkowski - ChemElectroChem, 2024 - Wiley Online Library
Operando studies using high‐energy X‐rays from synchrotron sources are essential for
unraveling the complex material transformation that electrocatalysts undergo under …

Study on Attenuation Mechanism and Durability Improvement of Platinum-Carbon Catalysts for Proton Exchange Membrane Fuel Cells

L Chen, W Zhao, Y Ren, Z Liu, L Zhang… - Journal of The …, 2024 - iopscience.iop.org
The relationship between Pt particle size and activity and durability of Pt/C electrocatalysts
on rotating disk electrodes is established and the results show that Pt/C electrocatalysts with …

Following structural changes in iridium nanoparticles during oxygen evolution electrocatalysis with operando X-ray total scattering

R Pittkowski, S Punke, AS Anker, A Bornet, N Magnard… - 2023 - chemrxiv.org
Understanding the structure of nanoparticles under (electro) catalytic operating conditions is
crucial for uncovering structure-property relationships. By combining operando X-ray total …

Operando characterization of carbon-supported metal nanoparticle fuel cell catalysts

R Pittkowski, KMØ Jensen, M Arenz - 2022 - danscatt.dk
Electrocatalysis plays a major role in energy conversion technologies for the storage of
renewable electricity, such as electrolyzers and fuel cells. Small metal nanoparticles, eg of …

The Use of Operando Scattering to investigate the Degradation of Pt/C Fuel Cell Catalyst

M Arenz - esrf.fr
Proton exchange membrane fuel cell (PEMFC) powered vehicles are a promising alternative
to combustion engines in the heavy-duty sector. For such applications extended lifetimes of …