Aaron T. Marshall
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View article: Critical Factors Contributing to Thermally Induced Hotspots in PEM Water Electrolysers
Critical Factors Contributing to Thermally Induced Hotspots in PEM Water Electrolysers Open
Thermally induced hotspots in proton exchange membrane water electrolysers (PEMWEs) pose significant challenges to the efficient production of green hydrogen. This literature review explores the key factors contributing to hotspot formatio…
View article: Investigation of Charge Carrier Dynamics in Molybdenum-Doped Bismuth Vanadate Using Intensity-Modulated Photocurrent Spectroscopy
Investigation of Charge Carrier Dynamics in Molybdenum-Doped Bismuth Vanadate Using Intensity-Modulated Photocurrent Spectroscopy Open
BiVO 4 shows significant potential as a photoanode material for photoelectrochemical water-splitting. However, it is hindered by poor charge mobility and water oxidation kinetics. This work explores the effect of molybdenum doping on the c…
View article: Understanding the impact of the gas diffusion layer structure on catalyst utilization in the PEM water electrolyzer
Understanding the impact of the gas diffusion layer structure on catalyst utilization in the PEM water electrolyzer Open
A multiphysics half-cell model of a polymer electrolyte membrane water electrolyzer (PEMWE) was developed to probe impacts of the detailed 3-dimensional pore structure of the gas diffusion layer (GDL) on performance characteristics. We sho…
View article: Phosphorous and Nitrogen Dual‐Doped Carbon as a Highly Efficient Electrocatalyst for Sodium‐Oxygen Batteries
Phosphorous and Nitrogen Dual‐Doped Carbon as a Highly Efficient Electrocatalyst for Sodium‐Oxygen Batteries Open
Sodium‐oxygen batteries have been regarded as promising energy storage devices due to their low overpotential and high energy density. Its applications, however, still face formidable challenges due to the lack of understanding about the i…
View article: Predicting decomposition temperatures and carbonization feasibility of heterocycles with their decomposition mechanism
Predicting decomposition temperatures and carbonization feasibility of heterocycles with their decomposition mechanism Open
Pyrolysis of heterocyclic compounds such as Meldrum's acid (MA) derivatives has been studied with focus on two key mechanisms analysing their energy barrier diagrams using the hybrid density functional theory method M06-2X. The feasibility…
View article: Evaluating Phase Relations in Molten Oxides for Electrochemical Operating Windows for Selective Metal Reduction
Evaluating Phase Relations in Molten Oxides for Electrochemical Operating Windows for Selective Metal Reduction Open
Molten oxide electrolysis is a promising pathway to decarbonize primary metal production. The oxide electrolyte is less hazardous and eco‐toxic than halides (molten salt electrolysis) and, with the use of renewably generated electricity an…
View article: Novel ion beam implantation of felt electrodes for the vanadium flow battery: Role of defects versus nitrogen groups for the VO2+/VO2+ redox reaction
Novel ion beam implantation of felt electrodes for the vanadium flow battery: Role of defects versus nitrogen groups for the VO2+/VO2+ redox reaction Open
A novel approach to introduce catalytic sites to carbon and graphite felts in order to improve electrode activity and investigate the effectiveness of specific active sites for the vanadium flow battery (VFB) has been achieved via ion beam…
View article: Effect of loading and pyrolysis of carbon-supported cobalt phthalocyanine on the electrocatalytic reduction of CO2
Effect of loading and pyrolysis of carbon-supported cobalt phthalocyanine on the electrocatalytic reduction of CO2 Open
Understanding the structure-activity relationship of materials that are active for the CO2 electrochemical reduction reaction (CO2ERR) is crucial for developing stable, high-performance catalysts. In this research, it is first shown that b…
View article: The Rationale for a Standardized Testing Protocol for Anion Exchange Membrane Water Electrolyzers
The Rationale for a Standardized Testing Protocol for Anion Exchange Membrane Water Electrolyzers Open
Hydrogen production by water electrolysis is an area of growing interest, especially when coupled to intermittent renewable energy generation. The green hydrogen produced is a versatile energy carrier and is essential for industrial decarb…
View article: Oxygen functionalized carbon obtained from pyrolysis of heterocyclic compounds with their decomposition mechanism
Oxygen functionalized carbon obtained from pyrolysis of heterocyclic compounds with their decomposition mechanism Open
In this study, two heterocyclic compounds, 2,2-dimethyl-1,3-dioxane-4,6‑dione (DMDO) and 2,2,5-trimethyl-1,3-dioxane-4,6‑dione (5-DMDO), were thermally decomposed in an inert atmosphere of nitrogen to obtain oxygen functionalized carbon. T…
View article: Assessing the Feasibility of Implementing Porous Carbon Foam Electrodes Derived from Coal in Redox Flow Batteries
Assessing the Feasibility of Implementing Porous Carbon Foam Electrodes Derived from Coal in Redox Flow Batteries Open
The feasibility of carbon foam electrodes derived from coal for the vanadium redox flow battery (VFB) is assessed as a pathway to repurpose mining waste for use in renewable energy storage technologies. Three-electrode, half-cell, and full…
View article: Defective Carbon for Next‐Generation Stationary Energy Storage Systems: Sodium‐Ion and Vanadium Flow Batteries
Defective Carbon for Next‐Generation Stationary Energy Storage Systems: Sodium‐Ion and Vanadium Flow Batteries Open
This review examines the role of defective carbon‐based electrodes in sodium‐ion and vanadium flow batteries. Methods for introducing defects into carbon structures are explored and their effectiveness in improving electrode performance is…
View article: Techno-economic modelling of AEM electrolysis systems to identify ideal current density and aspects requiring further research
Techno-economic modelling of AEM electrolysis systems to identify ideal current density and aspects requiring further research Open
Hydrogen produced by water electrolysis using renewable energy is a sustainable alternative to steam reformation. As a nascent commercial technology, performance, and economic comparisons of anion exchange membrane water electrolyzers (AEM…
View article: Electrochemical CO<sub>2</sub> Reduction on Au Cluster-based Electrodes: Investigating the Role of Nafion Ionomer
Electrochemical CO<sub>2</sub> Reduction on Au Cluster-based Electrodes: Investigating the Role of Nafion Ionomer Open
The performance of electrocatalytic CO 2 reduction (CO 2 RR) depends not only on the catalytic material but also on the neighbouring chemical environment around the active sites. The surrounding local environment can perturb the electronic…
View article: X-ray Absorption Spectroscopy of Phosphine-Capped Au Clusters
X-ray Absorption Spectroscopy of Phosphine-Capped Au Clusters Open
The structural determination of ultrasmall clusters remains a challenge due to difficulties in crystallisation. Often the atomically precise clusters undergo structural change under the influence of the environment. X-ray absorption spectr…