Orr, C(harles) W(ilfred)
Improving ORR Activity of Nitrogen-Doped Carbon Catalysts via Washing PANI-iron Coordination Precursor with ethanol
... enhancing ORR activities of N-doped carbon catalysts, much research work has been done till ...that ORR activity of nitrogen-doped graphene was improved by space-confinement-induced ...the ORR ...
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Effects of cobalt precursor on pyrolyzed carbon supported cobalt polypyrrole as electrocatalyst toward oxygen reduction reaction
... for ORR in Fe-based catalysts ob- tained at high pyrolysis temperatures, but other types of nitrogen including pyrrolic-N do not seem to be in- ...enhanced ORR catalytic ...the ORR catalytic ...
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Effects of Heat-Treatment and Pyridine Addition on the Catalytic Activity of Carbon-Supported Cobalt-Phthalocyanine for Oxygen Reduction Reaction in Alkaline Electrolyte
... the ORR in alkaline media, Co- and Fe- complexes with phthalocyanines (Pc) or similar N-macrocycles, supported on carbon blacks, have been largely explored as electrocatalysts for the ...the ORR activity ...
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Pd and Pd-Co Oxygen Reduction Nanocatalysts in Acidic Media
... the ORR and distinguished from polarization ...The ORR characteristic RDE polarization curves for the nanometric (Pd-Co/C 25 ) 3 electrocatalyst, at different rotation rates are ...
12
High-Performance N-doped Bifunctional Carbon Electrocatalysts Derived from Polymer Waste for Oxygen Reduction and Evolution Reaction
... the ORR catalytic pathways of these prepared N-BCEs, we also conducted rotating ring disk electrode measurements at 5 mVs -1 with a rotation speed of 1600 rpm and a Pt-ring operating potential of ...
13
Heavily Graphitic Nitrogen Self doped High porosity Carbon for the Electrocatalysis of Oxygen Reduction Reaction
... the ORR catalytic activity of this carbon material can compare favorably with that of the state-of- the-art commercial 20 ...the ORR and methanol-tolerant performance are better, suggesting a promising ...
7
Cyclic Voltammetry for Synthesizing Carbon Supported Pt-Cu Alloy with Superior Oxygen Reduction Activity
... the ORR. Compared with Pt/C, Cu/C, Pt- Cu/C exhibits the highest efficient catalytic activity for ORR, as evidenced by the highest current densities of the polarization curves, lowest ...
14
Effect of trifluoromethanesulfonic acid on the ORR activity of Pt in acid medium
... for ORR comes from the adsorption of sulfonic acid on platinum ...the ORR activity of Pt is essential to increase the utilization of Pt catalyst, and more researches should be conducted to reduce the ...
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Comparison of TiO2 and TiO2-CNT as Cathode Catalyst Supports for ORR
... and c)) exhibited significant differences with those of PTN33 ...more ORR catalytically active sites than ...towards ORR than PTN33, attributable to their better electrical ...
21
Platinum-Free Electrocatalyst for Oxygen Reduction Reaction Derived from the Direct Pyrolysis of Waste Watermelon Peels
... ORR polarization curves from RDE-LSV experiments were processed using Levich analysis to determine the number of electrons (n) involved in the ORR for the electrocatalysts under study. Equation (1) relates ...
7
High resolution mapping of oxygen reduction reaction kinetics at polycrystalline platinum electrodes
... the ORR could be susceptible to contamination, additional checks were performed that there was no significant change in the surface quality from atmospheric ...
9
Dominance, Epistasis and the Genetics of Postzygotic Isolation
... 1995; Orr certain hybrid genotypes were consistently sterile, while and Orr 1996; Gavrilets and Hastings 1996; Gavri- others were consistently ...1997; Orr fitness when brought together in hybrids ...
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Toward Platinum Group Metal-Free Catalysts for Hydrogen/Air Proton-Exchange Membrane Fuel Cells231-255
... the ORR in acid medium have never been so intense, as witnessed by a rising number of research groups working on the topic but also an increasing number of R&D funding calls dedicated to this class of ...
25
Nipah Virus C and W Proteins Contribute to Respiratory Disease in Ferrets
... N ipah virus (NiV), a lethal human pathogen, recently emerged in Southeast Asia. NiV belongs to the family Paramyxoviridae and causes acute respiratory disease and/or severe encephalitis with systemic vasculitis (1, 2). ...
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Analysis Of Sulphate Resistance Reactive Powder Concrete With W/C Variations
... a w/c = 0.2. Fig. 8(a) is a SEM of RPCSP28, C-S-H is formed but there is little pore with a size of about 5 μm due to the low w/c ...the C-H and C-S-H ...a ...
5
Incorporation of TiO2 into the PtPd/C Catalyst Layer for Improvement ORR Activity and Water Management
... the ORR activity of bimetallic Pt alloys have been observed, most Pt-M catalysts were found to exhibit a superior electrocatalytic activity compared to a Pt catalyst [5], which was due to the geometric (bond ...
15
General TermsQo : Heat dissipation rate. (w), A: Area (m 2), R: Thermal resistance (m2 .°C/W),
... Two devices are used in this study for measuring the parameters where Data logger device type lapjack U3 is used for measuring the temperature of the model. And an extension is used to increase the number of measuring ...
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Synthesis and Characterization of Silver-Modified Micro- Diamond as an Electrocatalyst for Oxygen Evolution and Reduction Reactions in Alkaline Medium
... A three-electrode system was constructed for the electrochemical measurements. A GC disk electrode coated with the catalyst served as the research electrode; platinum foil (1 cm 1 cm) and Ag/AgCl electrode were used as ...
14
Self Assembly and Ordering of C 60 on the WO2/W(110) Surface
... A W(110) single crystal, prepared at the Institute of Solid State Physics RAS, was used as the ...atomically-clean W(110) surface was prepared by in situ annealing at 1900 K in an oxygen atmosphere of 1 × ...
10
Correlation between Actual and Estimated W/C Ratio of Fresh Concrete
... actual w/c ratio through Archie‟s law According to Archie‟s law, the bulk electrical resistivity of porous media is a function of two parameters: 1) resistivity of the pore fluid; and 2) porosity ...
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