David A Cullen Senior R&D Staff Contact cullenda@ornl.gov | 865.576.0230 All Publications Platinum-Coated Nickel Nanowires as Oxygen-Reducing Electrocatalysts... Imaging and microanalysis of thin ionomer layers by scanning transmission electron microscopy... XPS and STEM Study of the Interface Formation between Ultra-Thin Ru and Ir OER Catalyst Layers and Perylene Red Support Whisk... The Chemical Behavior and Degradation Mitigation Effect of Cerium Oxide Nanoparticles in Perfluorosulfonic Acid Polymer Elect... Evaluation of the effect of impregnated platinum on PFSA degradation for PEM fuel cells. ... Composition-Mediated Order-Disorder Transformation in FePt Nanoparticles... Electroluminescence and Transmission Electron Microscopy Characterization of Reverse-Biased AlGaN/GaN Devices... The Degradation Mitigation Effect of Cerium Oxide in Polymer Electrolyte Membranes in Extended Fuel Cell Durability Tests... Efficient Oxygen Evolution Reaction Catalysts for Cell Reversal and Start/Stop Tolerance in Fuel Cells... A Materials-Based Mitigation Strategy for SU/SD in PEM Fuel Cells: Properties and Performance-Specific Testing of IrRu OER Ca... Ternary Electrocatalysts for Oxidizing Ethanol to Carbon Dioxide: Making Ir Capable of Splitting C-C bond ... Fuel Cells Catalyst for Start-up and Shutdown Conditions: Electrochemical, XPS, and TEM Evaluation of Sputter-Deposited Ru, I... Evaluation of Al3Mg2 precipitates and Mn-rich phase in aluminum-magnesium alloy based on scanning transmission electron micro... Transmission electron microscopy characterization of electrically stressed AlGaN/GaN high electron mobility transistor device... Layered YSZ/SCSZ/YSZ Electrolytes for Intermediate Temperature SOFC Part I: Design and Manufacturing... Utility of Hitachi ‘ZONE’ UV cleaning system for mitigating contamination effects in STEM imaging ... Covalently bonded three-dimensional carbon nanotube solids via boron induced nanojunctions... Characterization of durable nanostructured thin film catalysts tested under transient conditions using analytical aberration-... Transmission Electron Microscopy Study of Iron Oxide Poisoning in Fluid Catalytic Cracking Catalysts... Analytical aberration-corrected electron microscopy study of the effects of transient operation on the stability of nanostruc... Pagination First page « First Previous page ‹‹ … Page 9 Page 10 Current page 11 Key Links Curriculum Vitae ORCID Organizations Physical Sciences Directorate User Facilities Center for Nanophase Materials Sciences Nanomaterials Characterization Section Materials Microanalysis Group