David A Cullen Senior R&D Staff Contact CULLENDA@ORNL.GOV All Publications A novel PEMEC with 3D printed non-conductive bipolar plate for low-cost hydrogen production from water electrolysis... Solution‐Phase Synthesis of Silica Fibers and Their Use in Making Transparent High‐Strength Silica‐Polymer Composites Isolation of a 300 Kda, Au∼1400 Gold Compound, The Standard 3.6 Nm Capstone to a Series of Plasmonic Nanocrystals Protected by Aliphatic-like Thiolates A general synthesis approach for supported bimetallic nanoparticles via surface inorganometallic chemistry Atomically Dispersed Manganese Catalysts for Oxygen Reduction In Proton-exchange Membrane Fuel Cells Hard-Magnet L10-CoPt Nanoparticles Advance Fuel Cell Catalysis Atomically dispersed manganese catalysts for oxygen reduction in proton-exchange membrane fuel cells Selective and Stable Non-Noble-Metal Intermetallic Compound Catalyst for the Direct Dehydrogenation of Propane to Propylene Highly active atomically dispersed CoN 4 fuel cell cathode catalysts derived from surfactant-assisted MOFs: carbon-shell confinement strategy Improved electrochemical cycling stability of intercalation battery electrodes via control of material morphology Brittle fracture to recoverable plasticity: polytypism-dependent nanomechanics in todorokite-like nanobelts Geometry-Induced Spatial Variation of Microstructure Evolution During Selective Electron Beam Melting of Rene-N5... Developing titanium micro/nano porous layers on planar thin/tunable LGDLs for high-efficiency hydrogen production Aqueous Synthesis of Concave Rh Nanotetrahedra with Defect-rich Surfaces: Insights Into Growth-, Defect-, And Plasmon-enhanced Catalytic Energy Conversion Formation of the Conducting Filament in TaOx-Resistive Switching Devices by Thermal-Gradient-Induced Cation Accumulation Colloidal Cobalt-doped Zno Nanoparticles by Microwave-assisted Synthesis and Their Utilization In Thin Composite Layers with Meh-ppv as an Electroluminescent Material for Polymer Light Emitting Diodes A physical catalyst for the electrolysis of nitrogen to ammonia PtCo Cathode Catalyst Morphological and Compositional Changes after PEM Fuel Cell Accelerated Stress Testing... Novel thin/tunable gas diffusion electrodes with ultra-low catalyst loading for hydrogen evolution reactions in proton exchange membrane electrolyzer cells Durability of Pt-Co Alloy Polymer Electrolyte Fuel Cell Cathode Catalysts under Accelerated Stress Tests Strain-Driven Stacking Faults in CdSe/CdS Core/Shell Nanorods Metal-organic framework-derived nitrogen-doped highly disordered carbon for electrochemical ammonia synthesis using N2 and H2O in alkaline electrolytes Unveiling Active Sites of CO2 Reduction on Nitrogen-Coordinated and Atomically Dispersed Iron and Cobalt Catalysts A physical catalyst for the electrolysis of nitrogen to ammonia Nitrogen-Coordinated Single Cobalt Atom Catalysts for Oxygen Reduction in Proton Exchange Membrane Fuel Cells Pagination First page « First Previous page ‹Ĺ … Page 7 Current page 8 Page 9 … Next page ›ĺ 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