David A Cullen Senior R&D Staff Contact cullenda@ornl.gov | 865.576.0230 All Publications Enhancing the Electrochemical Performance of Aqueous Processed Li-Ion Cathodes with Silicon Oxide Coatings Effect of isopropanol cosolvent on the rheology and spinnability of aqueous polyacrylic acid solutions Trace level of atomic copper in N-doped graphene quantum dots switching the selectivity from C1 to C2 products in CO electror... 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 Amino-tethering synthesis strategy toward highly accessible sub-3-nm L10-PtM catalysts for high-power fuel cells Electrospun Nanofiber Electrodes for High and Low Humidity PEMFC Operation Improved Fuel Cell Chemical Durability of an Heteropoly Acid Functionalized Perfluorinated Terpolymer-Perfluorosulfonic Acid Composite Membrane 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 Nit... 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... 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 current Ordered CoPt oxygen reduction catalyst with high performance and durability PdCu Electrocatalysts for Selective Nitrate and Nitrite Reduction to Nitrogen 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... Atomically dispersed iron sites with a nitrogen–carbon coating as highly active and durable oxygen reduction catalysts for ... Electrocatalysis of Oxygen Reduction Reaction in a Polymer Electrolyte Fuel Cell with a Covalent Framework of Iron Phthalocyanine Aerogel Pagination First page « First Previous page ‹‹ Page 1 Current page 2 Page 3 … 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