David A Cullen Senior R&D Staff Contact CULLENDA@ORNL.GOV All Publications Multi-scale Low-dose Cryogenic TEM for Probing Beam-sensitive Thin-film Ionomer Variability Across Electrodes in Hydrogen Devices Unsupported and Carbon-Supported Silver Catalysts for Oxygen Reduction Reaction in Alkaline Media Electron microscopy data on irradiation effects in glassy carbon, nuclear graphite, pyrolytic carbon, and carbon fibers Elucidating Processes at Hard-Soft Interfaces in Next-Generation Electrochemical Devices by Cryogenic Electron Microscopy Degradation of Fuel Cell Membrane Electrode Assemblies from Buses Operated More than 25,000 h Investigating the Degradation Mechanism of Proton Exchange Membrane Water Electrolyzers Using Analytical Electron Microscopy Deep Learning Based Sinogram Inpainting for Fast and High-quality Artifact Correction in Electron Tomography In situ Gas Cell TEM Investigation of Nanoporous and Zeolite-based Nanocatalysts... Performance improvement of proton exchange membrane water electrolysis by surface modification of porous transport layers Synergy between Ni and Fe in NiFe aerogel oxygen evolution reaction catalyst: in situ57Fe Mössbauer and X-ray absorption spectroscopy studies Durability of PGM catalyst MEAs of polymer electrolyte membrane fuel cells for heavy-duty vehicles Self-replenishing Ni-rich stainless-steel electrode toward oxygen evolution reaction at ampere-level... Quantifying Sources of Voltage Decay in Long-Term Durability Testing for PEM Water Electrolysis Studying the Durability of Molybdenum Carbide Aerogel as an Electrocatalyst Support for Proton Exchange Membrane Fuel Cells Anomalous Role of Carbon in Pd-Catalyzed Selective Hydrogenation Enhancing durability and activity toward oxygen evolution reaction using single-site Re-doped NiFeOx catalysts at ampere-level Atomically Dispersed Ni-N-C Catalysts for Electrochemical CO2 Reduction Model-based iterative reconstruction with adaptive regularization for artifact reduction in electron tomography... Comprehensive characterization of the irradiation effects of glassy carbon ☆ A Three–Dimensional Nanoscale View of Electrocatalyst Degradation in Hydrogen Fuel Cells... A Three-dimensional Nanoscale View of Electrocatalyst Degradation in Hydrogen Fuel Cells Iridium Surface Oxide Affects the Nafion Interface in Proton-Exchange-Membrane Water Electrolysis Comprehensive Evaluation of commercially Scalable Atomic-layer-deposited Alumina Coating Impact on Full Cell Battery Performance Across Varied Test Conditions Durability of Highly Active PGM Catalyst MEA Tested Via Nitrogen and Air AST Cycling Under HDV Condition Pd-Ru pair on Pt surface for promoting hydrogen oxidation and evolution in alkaline media... Pagination Current page 1 Page 2 Page 3 … Next page ›› Last page Last » Key Links Curriculum Vitae Google Scholar ORCID Organizations Physical Sciences Directorate User Facilities Center for Nanophase Materials Sciences Nanomaterials Characterization Section electron Microscopy and Microanalysis Group
