David A Cullen Senior R&D Staff Contact CULLENDA@ORNL.GOV All Publications Trace level of atomic copper in N-doped graphene quantum dots switching the selectivity from C1 to C2 products in CO electroreduction TiOx-supported Na-Mn-W oxides for the oxidative coupling of methane Natural fiber-derived gas diffusion layers for high performance, lower cost PEM fuel cells Effect of isopropanol cosolvent on the rheology and spinnability of aqueous polyacrylic acid solutions Amino-tethering synthesis strategy toward highly accessible sub-3-nm L10-PtM catalysts for high-power fuel cells Improved Fuel Cell Chemical Durability of an Heteropoly Acid Functionalized Perfluorinated Terpolymer-Perfluorosulfonic Acid ... Design of graded cathode catalyst layers with various ionomers for fuel cell application Electrochemical characterization of evolving ionomer/electrocatalyst interactions throughout accelerated stress tests Robust Copper-Based Nanosponge Architecture Decorated by Ruthenium with Enhanced Electrocatalytic Performance for Ambient Nitrogen Reduction to Ammonia La–Sr–Co oxide catalysts for oxygen evolution reaction in anion exchange membrane water electrolyzer: The role of electrode fabrication on performance and durability Outstanding Platinum Group Metal-free Bifunctional Catalysts for Rechargeable Zinc-Air Batteries Electrospun Nanofiber Electrodes for High and Low Humidity PEMFC Operation Ordered CoPt oxygen reduction catalyst with high performance and durability PdCu Electrocatalysts for Selective Nitrate and Nitrite Reduction to Nitrogen 20%-efficient polycrystalline Cd(Se,Te) thin-film solar cells with compositional gradient near the front junction Elucidating the impact of the ionomer equivalent weight on a platinum group metal-free PEMFC cathode via oxygen limiting curr... Revealing the activity and selectivity of ppm level copper in gas diffusion electrodes towards CO and CO2 electroreduction Molecular Catalyst Synthesis Strategies to Prepare Atomically Dispersed Fe-N-C Heterogeneous Catalysts MoS2 nanosheet integrated electrodes with engineered 1T-2H phases and defects for efficient hydrogen production in practical ... Mixed-Metal Nickel–Iron Oxide Aerogels for Oxygen Evolution Reaction Design of PGM-free cathodic catalyst layers for advanced PEM fuel cells A general synthesis of single atom catalysts with controllable atomic and mesoporous structures Unveiling mechanism of surface-guided platinum nanowire growth Tracking Degradation in Individual Catalyst Nanoparticles Under Fuel Cell-Relevant Cycling Conditions by Identical-Location STEM Tracking Nanoparticle Degradation across Fuel Cell Electrodes by Automated Analytical Electron Microscopy... Pagination First page « First Previous page ‹â¶Ä¹ … Page 2 Current page 3 Page 4 … Next page ›â¶Äº 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
