Katherine E. Ayers
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View article: A harmonized protocol to assess the single-cell performance of proton exchange membrane water electrolyzers
A harmonized protocol to assess the single-cell performance of proton exchange membrane water electrolyzers Open
The harmonization of testing protocols for proton exchange membrane (PEM) electrolyzers is essential for ensuring accurate and reliable performance assessments and accelerating the development of hydrogen production technologies. This prot…
View article: Anion exchange membrane test protocol validation
Anion exchange membrane test protocol validation Open
This study presents the validation of protocols for measuring ion exchange capacity (IEC) and alkaline stability of anion exchange membranes (AEMs) for low-temperature water electrolysis. While protocols are often tested within individual …
View article: Catalyst Layer Design, Manufacturing and In-line Quality Control
Catalyst Layer Design, Manufacturing and In-line Quality Control Open
In this project we successfully demonstrated the capabilities of the Reactive Spray Deposition Technology (RSDT) to fabricate large-scale CCMs for advanced PEMWEs that have one-order of magnitude lower PGM loading in their catalyst layers,…
View article: Benchmarking Advanced Water Splitting Technologies: Best Practices in Materials Characterization
Benchmarking Advanced Water Splitting Technologies: Best Practices in Materials Characterization Open
The high-level project goal is to create a comprehensive Best Practices benchmarking framework at the materials, component, device and systems levels for advanced water splitting technologies. All advanced water splitting pathways covered …
View article: 2024 Water Splitting Technologies Benchmarking and Protocols Workshop
2024 Water Splitting Technologies Benchmarking and Protocols Workshop Open
The sixth annual Advanced Water Splitting Pathways Benchmarking meeting was held on June 11-12, 2024 at the Arizona State University California Center- Los Angeles, CA. A total of 117 people participated (102 in person and 15 via Zoom). At…
View article: Advanced electrode manufacturing to enable low cost PEM electrolysis
Advanced electrode manufacturing to enable low cost PEM electrolysis Open
A critical challenge for the implementation of proton exchange membrane (PEM)-based water electrolyzers for the H2@Scale vision is the capital cost, which is largely driven by related factors of overdesign and highly manual legacy manufact…
View article: Electrochemically Grown Ultrathin Platinum Nanosheet Electrodes with Ultralow Loadings for Energy-Saving and Industrial-Level Hydrogen Evolution
Electrochemically Grown Ultrathin Platinum Nanosheet Electrodes with Ultralow Loadings for Energy-Saving and Industrial-Level Hydrogen Evolution Open
Nanostructured catalyst-integrated electrodes with remarkably reduced catalyst loadings, high catalyst utilization and facile fabrication are urgently needed to enable cost-effective, green hydrogen production via proton exchange membrane …
View article: Editorial: Advanced water splitting technologies development: Best practices and protocols
Editorial: Advanced water splitting technologies development: Best practices and protocols Open
ISSN:2296-598X
View article: High Efficiency PEM Water Electrolysis Enabled by Advanced Catalysts, Membranes and Processes
High Efficiency PEM Water Electrolysis Enabled by Advanced Catalysts, Membranes and Processes Open
In this project, advanced membranes and catalysts were integrated into membrane electrode assembles (porous transport electrodes (PTE) or catalyst coated membranes (CCM)) leveraging precision coating methods to enable control of electrode …
View article: The 2022 applied physics by pioneering women: a roadmap
The 2022 applied physics by pioneering women: a roadmap Open
Women have made significant contributions to applied physics research and development, and their participation is vital to continued progress. Recognizing these contributions is important for encouraging increased involvement and creating …
View article: LTE-P-19 Comparison Metrics and Terms for Low Temperature Electrolysis
LTE-P-19 Comparison Metrics and Terms for Low Temperature Electrolysis Open
Defines a standard set of definitions, metrics, units, and conventions for low temperature electrolysis (LTE). The goal is to ensure that the literature is consistent from research group to research group, and data is reported in similar f…
View article: Developing novel electrodes with ultralow catalyst loading for high-efficiency hydrogen production in proton exchange membrane electrolyzer cells
Developing novel electrodes with ultralow catalyst loading for high-efficiency hydrogen production in proton exchange membrane electrolyzer cells Open
Hydrogen plays more crucial roles for decarbonizing the planets and meeting the climate challenges because of its high energy density and zero-emission. It can be produced with proton exchange membrane electrolyzer cells (PEMECs) driven by…
View article: Standard operating procedure for post-operation component disassembly and observation of benchtop water electrolyzer testing
Standard operating procedure for post-operation component disassembly and observation of benchtop water electrolyzer testing Open
Post-operation component disassembly and observation of electrolyzer parts is useful in understanding the interactions of the components and the electrochemical environment beyond the systems electrochemical output. We report a standard pr…
View article: Long‐Term Operation of Nb‐Coated Stainless Steel Bipolar Plates for Proton Exchange Membrane Water Electrolyzers
Long‐Term Operation of Nb‐Coated Stainless Steel Bipolar Plates for Proton Exchange Membrane Water Electrolyzers Open
Proton exchange membrane water electrolysis (PEMWE) is the most promising technology for green hydrogen production using renewable electricity, but it is expensive due to the Ti bipolar plates (BPPs). Herein, a PEMWE stack with coated stai…
View article: Measurement of Resistance, Porosity, and Water Contact Angle of Porous Transport Layers for Low-Temperature Electrolysis Technologies
Measurement of Resistance, Porosity, and Water Contact Angle of Porous Transport Layers for Low-Temperature Electrolysis Technologies Open
The porous transport layer is an important component of low-temperature electrolysis devices, such as proton exchange membrane water electrolyzers or anion exchange membrane water electrolyzers. PTLs have significant influence on the cell …
View article: Degradation Mechanisms in Advanced MEAs for PEM Water Electrolyzers Fabricated by Reactive Spray Deposition Technology
Degradation Mechanisms in Advanced MEAs for PEM Water Electrolyzers Fabricated by Reactive Spray Deposition Technology Open
Proton exchange membrane water electrolyzers (PEMWEs) have demonstrated enormous potential as the next generation hydrogen production technology. The main challenges that the state-of-the-art PEMWEs are currently facing are excessive cost …
View article: Review—Engineering Challenges in Green Hydrogen Production Systems
Review—Engineering Challenges in Green Hydrogen Production Systems Open
Today, hydrogen (H 2 ) is overwhelmingly produced through steam methane reforming (SMR) of natural gas, which emits about 12 kg of carbon dioxide (CO 2 ) for 1 kg of H 2 (∼12 kg-CO 2 /kg-H 2 ). Water electrolysis offers an alternative for …
View article: Three-Electrode Study of Electrochemical Ionomer Degradation Relevant to Anion-Exchange-Membrane Water Electrolyzers
Three-Electrode Study of Electrochemical Ionomer Degradation Relevant to Anion-Exchange-Membrane Water Electrolyzers Open
Among existing water electrolysis (WE) technologies, anion-exchange-membrane water electrolyzers (AEMWEs) show promise for low-cost operation enabled by the basic solid-polymer electrolyte used to conduct hydroxide ions. The basic environm…
View article: Tuning Catalyst Activation and Utilization Via Controlled Electrode Patterning for Low‐Loading and High‐Efficiency Water Electrolyzers
Tuning Catalyst Activation and Utilization Via Controlled Electrode Patterning for Low‐Loading and High‐Efficiency Water Electrolyzers Open
An anode electrode concept of thin catalyst‐coated liquid/gas diffusion layers (CCLGDLs), by integrating Ir catalysts with Ti thin tunable LGDLs with facile electroplating in proton exchange membrane electrolyzer cells (PEMECs), is propose…
View article: Exploring the Impacts of Conditioning on Proton Exchange Membrane Electrolyzers by <i>In Situ</i> Visualization and Electrochemistry Characterization
Exploring the Impacts of Conditioning on Proton Exchange Membrane Electrolyzers by <i>In Situ</i> Visualization and Electrochemistry Characterization Open
For a proton exchange membrane electrolyzer cell (PEMEC), conditioning is an essential process to enhance its performance, reproducibility, and economic efficiency. To get more insights into conditioning, a PEMEC with Ir-coated gas diffusi…
View article: PEM Electrolysis, a Forerunner for Clean Hydrogen
PEM Electrolysis, a Forerunner for Clean Hydrogen Open
Proton exchange membrane (PEM) electrolysis was originally developed in the 1950s and 1960s by General Electric for space applications to generate oxygen for astronaut life support. Since then, several companies have transitioned the same …
View article: Roundtable on Foundational Science for Carbon-Neutral Hydrogen Technologies (Technology Status Document)
Roundtable on Foundational Science for Carbon-Neutral Hydrogen Technologies (Technology Status Document) Open
This document summarizes the status of carbon-neutral hydrogen production, storage and transport, and utilization. The state of the art in the implementation, limitations, and challenges of these technologies are summarized. Sources of hyd…