Michael J. Dzara

Automating the analysis of micron-scale synchrotron diffraction data on inhomogeneous polycrystalline samples: a solid oxide electrolysis cell case study

Liam A. V. Nagle-Cocco, Christopher A. Crain, Michael J. Dzara, Mathias A. Kiefer et autres

A novel approach to post mortem characterisation of electrochemical and photovoltaic devices is spatially-resolved diffraction using a hyper-focused, micron-width x-ray beam to examine the distribution of degradation products and strain, a technique called $μ$-XRD. Aside from the experimental difficulties associated with beam …

Automating the analysis of micron-scale synchrotron diffraction data on inhomogeneous polycrystalline samples: a solid oxide electrolysis cell case study

Liam A. V. Nagle-Cocco, Christopher A. Crain, Michael J. Dzara, Mathias A. Kiefer et autres

A novel approach to post mortem characterisation of electrochemical and photovoltaic devices is spatially-resolved diffraction using a hyper-focused, micron-width x-ray beam to examine the distribution of degradation products and strain, a technique called $μ$-XRD. Aside from the experimental difficulties associated with beam …

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Dynamic Operation Strategies for High-Temperature Solid Oxide Electrolysis Cells

Zhikuan Zhu, Heather S. Slomski, Michael J. Dzara, Madeline VanWinkle et autres

Solid oxide electrolysis cells (SOECs) are increasingly expected to operate under non-steady conditions rather than fixed steady-state loads. To enable future large-scale deployment, it is essential to understand how different forms of dynamic operation impact cell reliability. In this work, we establish …

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Image processing workflow yielding high contrast synchrotron nanoscale computed tomography data from Ni-YSZ electrodes

Michael J. Dzara, Samuel S. Welborn, Christopher Crain, Molleigh B. Preefer et autres

The operating lifetime of Ni-YSZ fuel electrodes used in solid oxide electrolysis cells and fuel cells (SOECs and SOFCs) is limited by Ni redistribution, one of the primary degradation mechanisms that must be overcome to extend the longevity and maximize the performance …

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Robust dynamic operation of high temperature electrolysis solid oxide cells

Zhikuan Zhu, Michael J. Dzara, Heather S. Slomski, Madeline Van Winkle et autres

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In Situ X-Ray Photoelectron Spectroscopy Analysis of Catalyst–Ionomer Interactions in Fuel Cell Catalyst Layers

Jayson G. Foster, Michael J. Dzara, Carlos M. Baez-Cotto, Scott A Mauger et autres

X-ray photoelectron spectroscopy (XPS) has been widely used to study catalysts and support materials, offering valuable insights about surface composition and contributing to the optimization of their performance. However, investigations of catalyst layers (CLs) using XPS are more limited, due to several …

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Large-scale experimental validation of thermochemical water-splitting oxides discovered by defect graph neural networks

Tyra C. Douglas, Michael J. Dzara, Andrew J. E. Rowberg, Keith A. King et autres

To identify promising metal oxides for thermochemical water-splitting, we propose a workflow involving defect machine learning model training, high-throughput computational screening, material down-selection, and experimental validation.

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Large-scale experimental validation of thermochemical water-splitting oxides discovered by defect graph neural networks

Tyra Douglas, Michael J. Dzara, Andrew J. E. Rowberg, Keith A. King et autres

Thermochemical water-splitting (TCH) based on 2-step thermal redox cycles in metal oxides is a promising approach to generating H2, but state-of-the-art (SOTA) CeO2 has several practical limitations, which has motivated continued materials discovery efforts in this field. Here, we improve upon a …

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Voltage cycling as a dynamic operation mode for high temperature electrolysis solid oxide cells

Zhikuan Zhu, Heather S. Slomski, Michael J. Dzara, Christopher Crain et autres

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Understanding (La,Sr)(Co,Fe)O 3−δ Phase Instability within SOECs Using a Combined Experimental and Atomistic Modeling Approach

Heather S. Slomski, Jonas L. Kaufman, Michael J. Dzara, Nicholas A. Strange et autres

High Resolution Image Download MS PowerPoint Slide Understanding the onset of degradation in the air electrode within solid oxide electrolysis cells (SOECs), and the subsequent impact on cell performance, is a critical step in mitigating the performance losses and stability issues of …

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Interlayer Ions Control Spin Canting in Low-Dimensional Manganese Trimers in 12R-Ba4MMn3O12 (M = Ce, Pr) Layered Perovskites

Corlyn E. Regier, Shaun O’Donnell, Anuj Goyal, Michael J. Dzara et autres

High Resolution Image Download MS PowerPoint Slide To synthetically target a specific material with select performance, the underlying relationship between structure and function must be understood. For targeting magnetic properties, such understanding is underdeveloped for a relatively new class of layered hexagonal …

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(Invited) Early-Onset Degradation of (La,Sr)(Co,Fe)O3 in Solid Oxide Electrolysis Cells

Heather S. Slomski, Jonas L. Kaufman, Michael J. Dzara, Nicholas A. Strange et autres

The increasing need for global hydrogen ideally depends on low-cost 1$/kg green hydrogen. The DOE’s Energy Earthshot initiative aims to reduce the cost of green hydrogen to achieve this goal in a decade. There are a number of pathways of which solid …