Electrode rotated ring-disk

Eligh performance liquid chromatography Density functional theory Oxygen reduction reaction Rotating disk electrode Rotating ring disk electrode... 

Hydrodynamic electrodes — are electrodes where a forced convection ensures a -> steady state -> mass transport to the electrode surface, and a -> finite diffusion (subentry of -> diffusion) regime applies. The most frequently used hydrodynamic electrodes are the -> rotating disk electrode, -> rotating ring disk electrode, -> wall-jet electrode, wall-tube electrode, channel electrode, etc. See also - flow-cells, -> hydrodynamic voltammetry, -> detectors. 

Potential Sweep Voltammetry Rotating Disk Electrode Rotating Ring-Disk Electrode... 

Since a fuel cell is an electrochemical device, electrochemical mefliods are deemed to play important roles in characterizing and evaluating the cell and its components such as the electrode, the membrane, and the catalyst. The most popular eleetroehemical characterization methods include potential step, potential sweep, potential cycling, rotating disk electrode, rotating ring-disk eleetrode, and impedance spectroscopy. Some techniques derived from these methods are also used for fuel cell characterization. 

Electrochemiluminescence quantum yields of 8—10% from 9,10-diphenylanthracene and 14—20% from the 9,10-diphenylanthracene anion—thianthrene cation combination have been reported using the rotating ring disk electrode technique (157,173). 

How can you use the rotating ring disk electrode for detecting short-lived intermediate species ... 

Rigid film approximation, 53 Rotating disk electrode, 111 Rotating ring disk electrode, 113 Ruthenium dioxide, 121... 

Data on the electrochemistry of the telluride ion in alkaline media are relatively limited. Mishra et al. [53] studied the oxidation of Te to Te° at solid electrodes, focusing on the intermediate step(s) of this process, and in particular, the possibility of detecting ditelluride Te via rotating ring disk electrode (RRDE) methodology. Oxidation beyond the elemental state to TeO and TeO was also studied using cyclic and hydrodynamic voltammetry. 

A rotating ring-disk electrode study. J Electrochem Soc 137 3438-3441... 

MiUer B, Menezes S, Heller A (1978) Anodic formation of semiconductive sulfide films at cadmium and bismuth Rotating ring-disk electrode studies. 1 Electroanal Chem 94 85-97... 

FIGURE 4.7 Rotating ring-disk electrode (1) disk electrode (current/p) (2) ring electrode (current 7j ). 

Schmidt TJ, Grgur BN, Behm RJ, Markovic NM, Ross PN. 2000b. Bi adsorption on Pt(l 11) in perchloric acid solution A rotating ring-disk electrode and XPS smdy. Phys Chem Chem Phys 2 4379-4386. 

The ORR has been studied with a rotating ring-disk electrode (RRDE), which can provide theand the H2O2 yield P(H202) at around room temperamre. However, for improving the ORR activity, PEFCs should be operated at high temperature (> 80 °C). In this section, we demonstrate the temperature dependencies of ORR activity and P(H202) at pure Pt (both bulk and supported catalyst) and bulk Pt alloys (Pt-Ni, Pt-Co, and Pt-Fe). 

Paulus UA, Schmidt TJ, Gasteiger HA, Behm RJ. 2001. Oxygen reduction on a high-surface area Pt/Vulcan carbon catalyst A thin-film rotating ring-disk electrode study. J Electroanal Chem 495 134-145. 

Thin catalyst layers on a GC rotating disk electrode (RDE) or a rotating ring-disk electrode (RRDE) serve for studies of ORR kinetics. In order to separate the kinetic current from the measured current j, Schmidt and co-workers [Schmidt et al., 1998b] corrected the latter for the influence of oxygen diffusion in the aqueous electrolyte and in the polymer film using the foUowing equation ... 

Hsueh KL, Gonzalez ER, Srinivasan S. 1983. Electrolyte effects on oxygen reduction kinetics at platinum—A rotating-ring disk electrode analysis. Electrochim Acta 28 691-697. 

In the most common approach, a water-insoluble metaUoporphyrin is deposited on the surface of a rotating disk electrode (RDE) or on the disk of a rotating ring-disk electrode (RRDE Fig. 18.7a) as a film of poorly defined morphology, either by spontaneous adsorption from a solution of the catalyst in an organic solvent or by evaporation of an aliquot of such a solution onto the electrode. It is impossible to know the... 

Figure 18.7 (a) Rotating ring-disk electrode (RRDE left) and schematics of chemical... 

Rotating (ring-)disk electrode, 256, 260, 265, 318-320, 521, 648 Ruthenium electrocatalyst, 465-498... 

The rotating ring disk electrode can be used to study the products of the electrode reaction (Fig. 5.20). The products of the electrode reaction at the disk are carried by convective diffusion to the ring where they undergo a... 

Figure 6 Steady state rotating ring-disk voltammograms of (A) compound (42) (B) compound (43) and (C) a Ru-bridged polymer of (43) each adsorbed to a graphite working electrode. Disk current shows reduction of 02 while ring current reveals the presence of H202 simultaneously reoxidised at the ring anode poised at +1.0 V (reproduced with permission of the American Chemical Society from Acc. Chem. Res., 1997, 30, 437-444).

The iron complex (23) adsorbed on graphite electrode surfaces is an active catalyst for the electroreduction of both nitrite and nitric oxide to yield NH2OH and NH3, as demonstrated by rotating ring-disk electrode voltammetry experiments.341... 

Three main electrode configurations have been used in ECL work rotating ring-disk (RRD), dual and single electrodes. With the RRD electrode, the disk may,... 

Another type of polymeric structure is based macrocyclics or on stacks of macro-cyclic units. An exhaustive electrodynamic investigation of the polymer derived from yU.-oxo-(tetra-ferf-butylphthalocyaninato)germanium and of the monomer was carried out using CPE, CV, voltammetry by RDE, rotating ring-disk electrode and differential pulse... 

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