Showing papers in "Electrochimica Acta in 2007"

TL;DR: In this article, the development of lower cost carbons appropriate for use in electrochemical capacitors is underway by several speciality carbon suppliers. The goal is to reduce the cost of the carbon to $10-15/kg.

TL;DR: In this paper, the d-band model is reviewed and it is shown that it can be used to rationalize trends in reactivity in heterogeneous catalysis and electrochemistry.

TL;DR: In this paper, the effect of succinic acid (SA) on the corrosion inhibition of a low carbon steel (LCS) electrode has been investigated in aerated non-stirred 10-M HCl solutions in the pH range (2-8) at 25°C.

TL;DR: In this paper, the carbon felt was modified by pyrolysis of Ir reduced from H 2 IrCl 6. ac impedance and steady-state polarization measurements showed that the Ir-modified materials have improved activity and lowered overpotential of the desired V(IV)/V(V) redox process.

TL;DR: In this article, a comparative study of 5-amino-1,2,4-triazole (5-ATA), 5-AMino-3-mercapto-1.2, 4-Triazole(5-AMT), 5amino 3-methylthio (1, 2, 4)-triazoles (5AMeTT), and 1amino 1, 3 methylthio 1, 2 4-triaxole (1-AMETT) as inhibitors for mild steel corrosion in 0.1 m HCl solution at

TL;DR: In this article, three triazole derivatives (4-chloro-acetophenone-O-1'-(1',3,4'-triazolyl)-metheneoxime (CATM), 4-methoxyl-acetphenone O-1'1',(1,3',4',4'), MATM, and 4-fluoro-acethenone O'1'-1',1', 3', 4', 3, 4', 5', 4, 5', 6', 7, 7)-methenoxime(F

TL;DR: In this paper, over 150 journal papers were reviewed with respect to AC impedance modeling and validation in solid oxide fuel cell (SOFC) diagnosis, and the challenges currently faced by AC impedance modelling and validation were identified and possible directions and approaches in addressing these challenges were suggested.

TL;DR: In this paper, composites of carbon nanotubes with polyaniline (PANI), polypyrrole (PPY) or poly[3,4-ethylenedioxythiophene] (PEDOT) were prepared via electrochemical co-deposition from solutions containing acid treated CNTs and the corresponding monomer.

TL;DR: In this article, various plasma electrolytic oxidation (PEO) films were prepared on magnesium alloy AZ91D in a silicate bath with different additives such as phosphate, fluoride and borate, and the results showed that the PEO films obtained in solutions with both borate and fluoride had better corrosion resistance.

TL;DR: A ternary composite of CNT/polypyrrole/hydrous MnO 2 is prepared by in situ chemical method and its electrochemical performance is evaluated by using cyclic voltammetry (CV), impedance measurement and constant-current charge/discharge cycling techniques as mentioned in this paper.

TL;DR: In this article, a simple procedure is introduced to use periodic density functional theory calculations to estimate trends in the thermodynamics of surface alloy dissolution in acidic media, and the dissolution potentials for solute metal atoms embedded in the surface layer of various host metals are calculated.

TL;DR: In this paper, the inhibiting effect of several organic compounds on the corrosion of 2024 aluminium alloy in neutral chloride solution was investigated in the context of electrochemical impedance spectroscopy (EIS).

TL;DR: In this paper, the rotating ring disk method (RRDE) is applied to investigate the pH effect on oxygen reduction reaction (ORR) on Ag(1 1 1 ) single crystal surface in 01 M KOH and 01 M HClO 4.

TL;DR: In this article, a pore-network model is developed to study the liquid water movement and flooding in a gas diffusion layer (GDL), with the GDL morphology taken into account.

TL;DR: In this article, the electrochemical performance of 1-diethylamino-propan-2-ol (EAP) and 1-3-bis-deterministic dihydramino-polypropan 2 (DEAP) for brass in simulated atmospheric water is evaluated by potentiodynamic curves and electrochemical impedance spectroscopy (EIS).

TL;DR: In this paper, a critical discussion of possible artefacts and on the interpretation of the data is presented, with the main focus on application in corrosion science, as compared to the standard scanning Kelvin probe (SKP) technique.

TL;DR: In this article, a super-hydrophobic film was prepared by myristic acid (n -tetradecanoic) chemically adsorbed onto the copper wafer and its structure was characterized by means of water contact angle measurement, Fourier transformation infrared spectroscopy (FTIR) and scanning electron microscopy (SEM).

TL;DR: In this article, the super-hydrophobic film was formed on the fresh copper surface and the film structure was probed with contact angle measurement and scanning electron microscopy(SEM).

TL;DR: In this article, a non-catalyzed cathode made of granular graphite was used to achieve power outputs up to 21 W m(-3) (cathode total volume) or 50 W m(3)(cathodes liquid volume) in a continuous MFC fed with acetate.

TL;DR: In this article, anatase TiO 2 nanotubes with diameters of about 10nm and lengths of 200-400nm were synthesized by a hydrothermal process, and the phase structure and morphology were analyzed by X-ray diffraction, Raman scattering, and transmission electron microscopy.

TL;DR: In this paper, the authors investigated the kinetics of localized corrosion of 5083 aluminium alloy and showed that the importance of iron-rich and Mg2Si intermetallics phases in the initiation of corrosion processes is demonstrated.

TL;DR: In this article, the authors present a new modeling approach that is based on the combination of the elementary-kinetic description of electrochemistry, where multi-step chemical mechanisms account for coupled charge-transfer and surface chemistry, and the physical representation of electric potential steps due to interfacial double layers, allowing to calculate the cell voltage without using the Nernst equation.

TL;DR: In this article, a marine microbial fuel cell (MFC) was designed with a stainless steel anode embedded in marine sediments coupled to a stainless steels cathode in the overlying seawater.

TL;DR: In this paper, the effect of cysteine on the corrosion inhibition of copper was investigated using electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization measurements, and the experimental impedance data were analyzed using a proposed equivalent circuit model for the electrode/electrolyte interface.

TL;DR: In this article, the oxygen reduction reaction (ORR) was studied in KOH electrolyte on manganese oxides supported on Vulcan carbon (Mn y O x /C).

TL;DR: In this paper, the antimicrobials triclosan (2,4,4′-trichloro-2′-hydroxydiphenyl ether) and triclocarban (N-(4-chlorophenyl)-N′-(3,4-dichlorophenyl)urea) have been degraded by four electro-Fenton systems using undivided electrolytic cells with a Pt or boron-doped diamond (BDD) anode and a carbon felt or O2 diffusion cathode.

TL;DR: In this paper, the suitability of some single/binary liquid electrolytes and polymer electrolytes with a 1M solution of LiCF3SO3 was evaluated for discharge capacity and cycle performance of Li/S cells at room temperature.

TL;DR: In this article, a detailed investigation of the initial film grown on mechanically polished Mg electrodes has been carried out by ex situ X-ray Photoelectron Spectroscopy (XPS) and in situ photocurrent spectroscopy, allowing to reach a detailed picture of the passive layer structure.

TL;DR: In this article, a new class of electrocatalysts for the oxygen reduction reaction was synthesized, consisting of a monolayer of Pt or mixed monolayers of Pt and another late transition metal (Au, Pd, Ir, Ru, Rh, Re or Os) deposited on a Pd(1.1) single crystal or on carbon-supported Pd nanoparticles.

TL;DR: In this article, the surface area of PtRu catalysts in a membrane electrode assembly was determined by applying CO stripping voltammetry and it was shown that the CO charge determined in this way is independent on the sweep rate applied.