The Experts below are selected from a list of 186 Experts worldwide ranked by ideXlab platform
Anthony Kucernak - One of the best experts on this subject based on the ideXlab platform.
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Oxygen reduction at the silver/hydroxide-exchange membrane interface
Electrochemistry Communications, 2008Co-Authors: Alice E.s. Sleightholme, John R Varcoe, Anthony KucernakAbstract:Abstract A solid-state cell is used to study the electrocatalysis of oxygen reduction at the silver/hydroxide-exchange membrane interface. The catalyst/membrane interface exhibits improved performance in comparison to a catalyst/aqueous sodium hydroxide interface. Surprisingly, the Half-Wave Potential for oxygen reduction is shown to shift 185 mV higher at the silver/hydroxide-exchange membrane interface than for the silver/aqueous hydroxide solution interface, and the exchange current density is significantly higher at 1.02 × 10 −6 A m −2 . On a cost per performance basis, silver electrocatalysts in a hydroxide-exchange membrane fuel cell may provide better performance than platinum in a proton-exchange membrane fuel cell.
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oxygen reduction at the silver hydroxide exchange membrane interface
Electrochemistry Communications, 2008Co-Authors: Alice E.s. Sleightholme, John R Varcoe, Anthony KucernakAbstract:Abstract A solid-state cell is used to study the electrocatalysis of oxygen reduction at the silver/hydroxide-exchange membrane interface. The catalyst/membrane interface exhibits improved performance in comparison to a catalyst/aqueous sodium hydroxide interface. Surprisingly, the Half-Wave Potential for oxygen reduction is shown to shift 185 mV higher at the silver/hydroxide-exchange membrane interface than for the silver/aqueous hydroxide solution interface, and the exchange current density is significantly higher at 1.02 × 10 −6 A m −2 . On a cost per performance basis, silver electrocatalysts in a hydroxide-exchange membrane fuel cell may provide better performance than platinum in a proton-exchange membrane fuel cell.
Alice E.s. Sleightholme - One of the best experts on this subject based on the ideXlab platform.
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Oxygen reduction at the silver/hydroxide-exchange membrane interface
Electrochemistry Communications, 2008Co-Authors: Alice E.s. Sleightholme, John R Varcoe, Anthony KucernakAbstract:Abstract A solid-state cell is used to study the electrocatalysis of oxygen reduction at the silver/hydroxide-exchange membrane interface. The catalyst/membrane interface exhibits improved performance in comparison to a catalyst/aqueous sodium hydroxide interface. Surprisingly, the Half-Wave Potential for oxygen reduction is shown to shift 185 mV higher at the silver/hydroxide-exchange membrane interface than for the silver/aqueous hydroxide solution interface, and the exchange current density is significantly higher at 1.02 × 10 −6 A m −2 . On a cost per performance basis, silver electrocatalysts in a hydroxide-exchange membrane fuel cell may provide better performance than platinum in a proton-exchange membrane fuel cell.
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oxygen reduction at the silver hydroxide exchange membrane interface
Electrochemistry Communications, 2008Co-Authors: Alice E.s. Sleightholme, John R Varcoe, Anthony KucernakAbstract:Abstract A solid-state cell is used to study the electrocatalysis of oxygen reduction at the silver/hydroxide-exchange membrane interface. The catalyst/membrane interface exhibits improved performance in comparison to a catalyst/aqueous sodium hydroxide interface. Surprisingly, the Half-Wave Potential for oxygen reduction is shown to shift 185 mV higher at the silver/hydroxide-exchange membrane interface than for the silver/aqueous hydroxide solution interface, and the exchange current density is significantly higher at 1.02 × 10 −6 A m −2 . On a cost per performance basis, silver electrocatalysts in a hydroxide-exchange membrane fuel cell may provide better performance than platinum in a proton-exchange membrane fuel cell.
Hubert H. Girault - One of the best experts on this subject based on the ideXlab platform.
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facilitated ion transfer reactions across oil water interfaces part ii use of the convoluted current for the calculation of the association constants and for an amperometric determination of the stoichiometry of mljz complexes
Journal of Electroanalytical Chemistry, 1998Co-Authors: Frederic Reymond, Gregoire Lagger, Pierrealain Carrupt, Hubert H. GiraultAbstract:Cyclic voltammetric experiments for reversible ion transfers across the aqueous/organic interface facilitated by a neutral macrocyclic ligand are presented for complexation reactions of 1:1 to 1:4 ion-to-ligand stoichiometries. The convoluted current is taken into account to derive general theoretical equations relating the Half-Wave Potential to the initial concentrations of both the metal Mz+ and the ligand L. Analytical relationships are obtained for both limiting cases of ligand and, respectively, metal excess and for any type of reaction mechanisms. Likewise, considerations on the convoluted current provide a condition on the transition point between the diffusion regimes where either the metal or the ligand limits the transfer, which constitutes an amperometric determination of the complex stoichiometry. It is shown that the Half-Wave Potential depends on the various over-all association constants, on the partition coefficient of the ligand and on the initial concentrations of both Mz+ and L. This dependence is the same for the TIC, TOC and TID mechanisms, but differs in the case of the ACT mechanism. The theoretical predictions are corroborated by the results deduced from various calculated voltammograms and are verified experimentally for the transfer of Pb2+ assisted by the thioether ligand 1,4,7,10-tetrathiacyclododecane at the water/1,2-DCE interface. Thanks to the simulation, it is shown that the experimental current waves are due to 1:1 and 1:2 complex formation and that the first association constant in the organic phase is log K-1(0) approximate-to 5. (C) 1998 Elsevier Science S.A. All rights reserved
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Determination of the Half-Wave Potential of the species limiting the Potential window. Measurement of gibbs transfer energies at the water/1,2-dichloroethane interface
Journal of the Chemical Society Faraday Transactions, 1991Co-Authors: Y. Shao, A. A. Stewart, Hubert H. GiraultAbstract:The numerical integration of the differential equation for cyclic voltammetry has been performed for the case where the reverse Potential is set prior to the forward peak Potential. A working curve stemming from these integrations allows the determination of the Half-Wave Potential of species limiting the Potential window. This technique has been applied to the measurement of formal Gibbs energies of transfer of ions across the water/1,2-dichloroethane interface. The validity of the TATB (tetraphenylarsonium tetraphenylborate) assumption is also discussed.
John R Varcoe - One of the best experts on this subject based on the ideXlab platform.
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Oxygen reduction at the silver/hydroxide-exchange membrane interface
Electrochemistry Communications, 2008Co-Authors: Alice E.s. Sleightholme, John R Varcoe, Anthony KucernakAbstract:Abstract A solid-state cell is used to study the electrocatalysis of oxygen reduction at the silver/hydroxide-exchange membrane interface. The catalyst/membrane interface exhibits improved performance in comparison to a catalyst/aqueous sodium hydroxide interface. Surprisingly, the Half-Wave Potential for oxygen reduction is shown to shift 185 mV higher at the silver/hydroxide-exchange membrane interface than for the silver/aqueous hydroxide solution interface, and the exchange current density is significantly higher at 1.02 × 10 −6 A m −2 . On a cost per performance basis, silver electrocatalysts in a hydroxide-exchange membrane fuel cell may provide better performance than platinum in a proton-exchange membrane fuel cell.
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oxygen reduction at the silver hydroxide exchange membrane interface
Electrochemistry Communications, 2008Co-Authors: Alice E.s. Sleightholme, John R Varcoe, Anthony KucernakAbstract:Abstract A solid-state cell is used to study the electrocatalysis of oxygen reduction at the silver/hydroxide-exchange membrane interface. The catalyst/membrane interface exhibits improved performance in comparison to a catalyst/aqueous sodium hydroxide interface. Surprisingly, the Half-Wave Potential for oxygen reduction is shown to shift 185 mV higher at the silver/hydroxide-exchange membrane interface than for the silver/aqueous hydroxide solution interface, and the exchange current density is significantly higher at 1.02 × 10 −6 A m −2 . On a cost per performance basis, silver electrocatalysts in a hydroxide-exchange membrane fuel cell may provide better performance than platinum in a proton-exchange membrane fuel cell.
Karel Nesmerak - One of the best experts on this subject based on the ideXlab platform.
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SMILES-based quantitative structure-property relationships for Half-Wave Potential of N-benzylsalicylthioamides.
European journal of medicinal chemistry, 2013Co-Authors: Karel Nesmerak, Andrey A. Toropov, Alla P. Toropova, Petra Kohoutova, Karel WaisserAbstract:Abstract Optimal descriptors calculated with Simplified Molecular Input Line Entry System (SMILES) notation have been used in quantitative structure–property relationships (QSPR) of Half-Wave Potential of N-benzylsalicylthioamides. The QSPR developed is one-variable model based on the optimal descriptors calculated with the Monte Carlo method. The approach has been checked up with three random splits into the training and test sets. Mechanistic interpretations (structural alerts related to the Half-Wave Potential) of the model are discussed.
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SMILES-based QSPR model for Half-Wave Potentials of 1-phenyl-5-benzyl-sulfanyltetrazoles using CORAL
Chemical Physics Letters, 2012Co-Authors: Andrey A. Toropov, Karel NesmerakAbstract:Abstract The CORAL software ( http://www.insilico.eu/coral ) was used to build up the SMILES-based quantitative structure–property relationship (QSPR) for Half-Wave Potential of 1-phenyl-5-benzyl-sulfanyltetrazoles. The QSPR developed is one-variable model based on the optimal descriptors calculated with the Monte Carlo method. The approach has been checked with three random splits into the training and test sets. Mechanistic interpretations (structural alerts related to the endpoint) of the model are discussed.
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QSPR modeling of the Half-Wave Potentials of benzoxazines by optimal descriptors calculated with the SMILES
Computational biology and chemistry, 2006Co-Authors: Andrey A. Toropov, Karel Nesmerak, Karel Waisser, Ivan Raška, Karel PalátAbstract:Optimal descriptors calculated with Simplified Molecular Input Line Entry System (SMILES) notation have been used in quantitative structure-property relationships (QSPR) modeling electrochemical Half-Wave Potential of benzoxazine derivatives by one-variable correlations.
