David A Cullen Senior R&D Staff Contact 865.576.0230 | CULLENDA@ORNL.GOV All Publications Enhancing durability and activity toward oxygen evolution reaction using single-site Re-doped NiFeOx catalysts at ampere-level Comprehensive characterization of the irradiation effects of glassy carbon ☆ A Three-dimensional Nanoscale View of Electrocatalyst Degradation in Hydrogen Fuel Cells Comprehensive Evaluation of commercially Scalable Atomic-layer-deposited Alumina Coating Impact on Full Cell Battery Performance Across Varied Test Conditions Pd-Ru pair on Pt surface for promoting hydrogen oxidation and evolution in alkaline media... Aerogel-derived nickel-iron oxide catalysts for oxygen evolution reaction in alkaline media Automated Cryo-TEM of Highly Beam-Sensitive Hard-Soft Ionomer Interfaces in Green Hydrogen Devices Second Target Station Project: STS Cross-Directorate Workshop on Hydrogen Fuel Self-Sacrificial Template Synthesis of Fe-N-C Catalysts with Dense Active Sites Deposited on A Porous Carbon Network for High Performance in PEMFC Amorphous Iridium Oxide-Integrated Anode Electrodes with Ultrahigh Material Utilization for Hydrogen Production at Industrial Current Densities Operando Carbon Corrosion Measurements in Fuel Cells Using Boron-doped Carbon Supports Simulated Start-Stop and the Impact of Catalyst Layer Redox on Degradation and Performance Loss in Low-Temperature Electrolys... Catalyst-Specific Accelerated Stress Tests in Proton Exchange Membrane Low-Temperature Electrolysis for Intermittent Operation Impact of polymer additives on crack mitigation of rod-coated fuel cell cathode catalyst layers... Ionomer-free nanoporous iridium nanosheet electrodes with boosted performance and catalyst utilization for high-efficiency water electrolyzers The role of surface chemistry in the synthesis of supported CuPd bimetallic/intermetallic catalysts for selective hydrogenation reactions Effect of Engineered Cracks in Catalyst Layers on PEMFC Catalyst Layer Durability... Tuning the thermal activation atmosphere breaks the activity–stability trade-off of Fe–N–C oxygen reduction fuel cell catalysts A scalable membrane electrode assembly architecture for efficient electrochemical conversion of CO2 to formic acid... Probing individual single atom electrocatalyst sites by advanced analytical scanning transmission electron microscopy Bypassing Formation of Oxide Intermediate via Chemical Vapor Deposition for the Synthesis of an Mn-N-C Catalyst with Improved ORR Activity CO2-mediated oxidative dehydrogenation of propane enabled by Pt-based bimetallic catalysts... Highly Active Oxygen Reduction Electrocatalysts Derived from an Iron-Porphyrin Framework Atomically Ordered PdCu Electrocatalysts for Selective and Stable Electrochemical Nitrate Reduction Modular Iron–Bipyridine-Based Conjugated Aerogels as Catalysts for Oxygen Reduction Reaction Pagination Current page 1 Page 2 Page 3 … Next page ›â¶Äº Last page Last » Key Links Curriculum Vitae Organizations Physical Sciences Directorate User Facilities Center for Nanophase Materials Sciences Nanomaterials Characterization Section electron Microscopy and Microanalysis Group