David A Cullen Senior R&D Staff Contact CULLENDA@ORNL.GOV All Publications The Impact of Ink and Spray Variables on Catalyst Layer Properties, Electrolyzer Performance, and Electrolyzer Durability Electron tomography of unirradiated and irradiated nuclear graphite Single Cobalt Sites Dispersed in Hierarchically Porous Nanofiber Networks for Durable and High‐Power PGM‐Free Cathodes in Fuel Cells Methanol tolerance of atomically dispersed single metal site catalysts: mechanistic understanding and high-performance direct methanol fuel cells Impact of Carbon Support Structure on the Durability of PtCo Electrocatalysts Direct Characterization of Atomically Dispersed Catalysts: Nitrogen‐Coordinated Ni Sites in Carbon‐Based Materials for CO2 Electroreduction Styrene-Based Elastomer Composites with Functionalized Graphene Oxide and Silica Nanofiber Fillers: Mechanical and Thermal Conductivity Properties P-block single-metal-site tin/nitrogen-doped carbon fuel cell cathode catalyst for oxygen reduction reaction Atomic-Scale Structural Mapping of Active Sites in Monolayer PGM-Free Catalysts by Low-Voltage 4D-STEM Hybrid hollow silica particles: synthesis and comparison of properties with pristine particles Efficient Hot Electron Transfer from Small Au Nanoparticles Exchange of Ions across the TiN/TaO x Interface during Electroformation of TaO x -Based Resistive Switching Devices Improving Electronic Conductivity of Layered Oxides through the Formation of Two-Dimensional Heterointerface for Intercalation Batteries Enhancing Ce x Zr 1 – x O 2 Activity for Methane Dry Reforming Using Subsurface Ni Dopants Building Electron/Proton Nanohighways for Full Utilization of Water Splitting Catalysts... Heat‐Treated Aerogel as a Catalyst for the Oxygen Reduction Reaction... Plasma Synthesis of Spherical Crystalline and Amorphous Electrolyte Nanopowders for Solid-State Batteries Atomically Dispersed Single Ni Site Catalysts for Nitrogen Reduction toward Electrochemical Ammonia Synthesis Using N 2 and H 2 O 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 Pagination First page « First Previous page ‹Ĺ … Page 5 Current page 6 Page 7 … 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
