David A Cullen Senior R&D Staff Contact CULLENDA@ORNL.GOV All Publications 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... 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 CO2-mediated oxidative dehydrogenation of propane enabled by Pt-based bimetallic 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 Modular Iron–Bipyridine-Based Conjugated Aerogels as Catalysts for Oxygen Reduction Reaction Highly Active Oxygen Reduction Electrocatalysts Derived from an Iron-Porphyrin Framework Atomically Ordered PdCu Electrocatalysts for Selective and Stable Electrochemical Nitrate Reduction Catalyst Layer Resistance and Utilization in PEM Electrolysis Failure to Fail: Recreating Real-life Nanoparticle Degradation in Model Environments Reducing Artifacts in BF and HAADF-STEM Images of Pt/C Fuel Cells using MBIR-ARAR Cryogenic FIB and (S)TEM for Energy Storage and Conversion Materials Research Aging gracefully? Investigating iridium oxide ink's impact on microstructure, catalyst/ionomer interface, and PEMWE performance Pt Nanoparticles on Atomic-Metal-Rich Carbon for Heavy-Duty Fuel Cell Catalysts: Durability Enhancement and Degradation Behavior in Membrane Electrode Assemblies Regulating Catalytic Properties and Thermal Stability of Pt and PtCo Intermetallic Fuel-Cell Catalysts via Strong Coupling Effects between Single-Metal Site-Rich Carbon and Pt Microstructural characterization of the CGB graphite grade from the molten salt reactor experiment Ionomer-free and recyclable porous-transport electrode for high-performing proton-exchange-membrane water electrolysis Investigation of Nanoparticle Degradation in Hydrogen Fuel Cell Systems through Automated Electron Microscopy Large-scale synthesis of metal/nitrogen Co-doped carbon catalysts for CO2 electroreduction Understanding Interfacial Electrochemical Reactions through in situ ec-STEM and IL-Cryo-STEM Structural and Reactivity Effects of Secondary Metal Doping into Iron-Nitrogen-Carbon Catalysts for Oxygen Electroreduction Pagination First page « First Previous page ‹‹ Page 1 Current 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
