David A Cullen Senior R&D Staff Contact cullenda@ornl.gov | 865.576.0230 All Publications Atomically Dispersed Single Ni Site Catalysts for Nitrogen Reduction toward Electrochemical Ammonia Synthesis Using N 2 and H... Impacts of catalyst nanolayers on water permeation and swelling of polymer electrolyte membranes... Adsorption of Colloidal Metal Nanoparticles via Solvent Engineering... Thermally Driven Structure and Performance Evolution of Atomically Dispersed FeN4 Sites for Oxygen Reduction... Method To Synthesize Micronized Spherical Carbon Particles from Lignin Ionic Conductance through Graphene: Assessing Its Applicability as a Proton Selective Membrane... Electrospun Particle/Polymer Fiber Electrodes with a Neat Nafion Binder for Hydrogen/Air Fuel Cells... Distribution and Valence State of Ru Species on CeO2 Supports: Support Shape Effect and Its Influence on CO Oxidation... Elucidation of Fe-N-C electrocatalyst active site functionality via in-situ X-ray absorption and operando determination of ox... High-performance fuel cell cathodes exclusively containing atomically dispersed iron active sites... Mass-transport properties of electrosprayed Pt/C catalyst layers for polymer-electrolyte fuel cells... Voltage gated inter-cation selective ion channels from graphene nanopores... Effect of Moisture on Dopant Segregation in Solid Hosts... Thermal-gradient-driven elemental segregation in Ge2Sb2Te5 phase change memory cells... Nanofiber Fuel Cell MEAs with a PtCo/C Cathode... Stable Metallic Enrichment in Conductive Filaments in TaOx‐Based Resistive Switches Arising from Competing Diffusive Fluxes... Same solution synthesis and self-assembly of porous silica nanoparticles into microspheres... Microstructure and Coercivity In Alnico 9 A novel PEMEC with 3D printed non-conductive bipolar plate for low-cost hydrogen production from water electrolysis Solvothermal Hot Injection Synthesis of Core-shell Agni Nanoparticles A novel PEMEC with 3D printed non-conductive bipolar plate for low-cost hydrogen production from water electrolysis A Novel Pemec with 3d Printed Non-conductive Bipolar Plate for Low-cost Hydrogen Production from Water Electrolysis A novel PEMEC with 3D printed non-conductive bipolar plate for low-cost hydrogen production from water electrolysis... A novel PEMEC with 3D printed non-conductive bipolar plate for low-cost hydrogen production from water electrolysis... Brittle fracture to recoverable plasticity: polytypism-dependent nanomechanics in todorokite-like nanobelts... Pagination First page « First Previous page ‹‹ … Page 5 Current page 6 Page 7 … 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