David A Cullen Senior R&D Staff Contact cullenda@ornl.gov | 865.576.0230 All Publications 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 wa... The role of surface chemistry in the synthesis of supported CuPd bimetallic/intermetallic catalysts for selective hydrogenati... Tuning the thermal activation atmosphere breaks the activity–stability trade-off of Fe–N–C oxygen reduction fuel cell c... 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 Catalyst Layer Resistance and Utilization in PEM Electrolysis 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 Failure to Fail: Recreating Real-life Nanoparticle Degradation in Model Environments Large-scale synthesis of metal/nitrogen Co-doped carbon catalysts for CO2 electroreduction Ionomer-free and recyclable porous-transport electrode for high-performing proton-exchange-membrane water electrolysis... Structural and Reactivity Effects of Secondary Metal Doping into Iron-Nitrogen-Carbon Catalysts for Oxygen Electroreduction... Coaxial Nanowire Electrodes Enable Exceptional Fuel Cell Durability Electrochemically Grown Ultrathin Platinum Nanosheet Electrodes with Ultralow Loadings for Energy-Saving and Industrial-Level Hydrogen Evolution Characterization approaches for atomically dispersed platinum group metal-free catalysts... Grooved electrodes for high-power-density fuel cells Pagination Current page 1 Page 2 Page 3 … Next page ›› Last page Last » Key Links Curriculum Vitae ORCID Organizations Physical Sciences Directorate User Facilities Center for Nanophase Materials Sciences Nanomaterials Characterization Section Materials Microanalysis Group
