Justus S. Diercks
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View article: Surface Ir<sup>+5</sup> Formation as a Universal Prerequisite for O<sub>2</sub> Evolution on Ir Oxides
Surface Ir<sup>+5</sup> Formation as a Universal Prerequisite for O<sub>2</sub> Evolution on Ir Oxides Open
The large-scale deployment of polymer electrolyte water electrolysis (PEWE) is largely limited by the use of O2 evolution reaction (OER) catalysts based on scarce and expensive iridium in PEWE anodes. The ensuing need for better-performing…
View article: Catalyst Aggregate Size Effect on the Mass Transport Properties of Non-Noble Metal Catalyst Layers for PEMFC Cathodes
Catalyst Aggregate Size Effect on the Mass Transport Properties of Non-Noble Metal Catalyst Layers for PEMFC Cathodes Open
Non-noble metal catalysts (NNMCs) are regarded as a promising alternative to the costly Pt-based materials required to catalyze the oxygen reduction reaction (ORR) in proton exchange membrane fuel cell (PEMFC) cathodes. However, the large …
View article: Quantification of PEFC Catalyst Layer Saturation via In Silico, Ex Situ, and In Situ Small-Angle X-ray Scattering
Quantification of PEFC Catalyst Layer Saturation via In Silico, Ex Situ, and In Situ Small-Angle X-ray Scattering Open
The complex nature of liquid water saturation of polymer electrolyte fuel cell (PEFC) catalyst layers (CLs) greatly affects the device performance. To investigate this problem, we present a method to quantify the presence of liquid water i…
View article: Spectroscopy vs. Electrochemistry: Catalyst Layer Thickness Effects on Operando/In Situ Measurements
Spectroscopy vs. Electrochemistry: Catalyst Layer Thickness Effects on Operando/In Situ Measurements Open
In recent years, operando/in situ X‐ray absorption spectroscopy (XAS) has become an important tool in the electrocatalysis community. However, the high catalyst loadings often required to acquire XA‐spectra with a satisfactory signal‐to‐no…
View article: Spectroscopy vs. Electrochemistry: Catalyst Layer Thickness Effects on Operando/In Situ Measurements
Spectroscopy vs. Electrochemistry: Catalyst Layer Thickness Effects on Operando/In Situ Measurements Open
In recent years, operando/in situ X‐ray absorption spectroscopy (XAS) has become an important tool in the electrocatalysis community. However, the high catalyst loadings often required to acquire XA‐spectra with a satisfactory signal‐to‐no…
View article: Electrochemical Surface Area Quantification, CO<sub>2</sub> Reduction Performance, and Stability Studies of Unsupported Three-Dimensional Au Aerogels versus Carbon-Supported Au Nanoparticles
Electrochemical Surface Area Quantification, CO<sub>2</sub> Reduction Performance, and Stability Studies of Unsupported Three-Dimensional Au Aerogels versus Carbon-Supported Au Nanoparticles Open
The efficient scale-up of CO2-reduction technologies is a pivotal step to facilitate intermittent energy storage and for closing the carbon cycle. However, there is a need to minimize the occurrence of undesirable side reactions like H2 ev…
View article: Green chemistry and first-principles theory enhance catalysis: synthesis and 6-fold catalytic activity increase of sub-5 nm Pd and Pt@Pd nanocubes
Green chemistry and first-principles theory enhance catalysis: synthesis and 6-fold catalytic activity increase of sub-5 nm Pd and Pt@Pd nanocubes Open
In this contribution we demonstrate the superior catalytic activity of citrate-coated sub-5 nm Pd and Pt@Pd nanocubes synthesized by harnessing the simulation-derived mechanism behind anisotropic growth.
View article: An Online Gas Chromatography Cell Setup for Accurate CO<sub>2</sub>-Electroreduction Product Quantification
An Online Gas Chromatography Cell Setup for Accurate CO<sub>2</sub>-Electroreduction Product Quantification Open
The electrochemical reduction of carbon dioxide (CO 2 ) constitutes an increasingly important scientific topic and research on novel electrocatalysts for this demanding reaction is constantly increasing. One of the most important propertie…