Encyclopedia of Interfacial Chemistry 2018
DOI: 10.1016/b978-0-12-409547-2.13563-2
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Rotating Disk and Ring–Disk Electrodes

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Cited by 6 publications
(11 citation statements)
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“…Well-defined limiting currents were reached for both the oxidation and reduction reactions, showing an excellent linear dependence ( R 2 = 0.9996, with a zero offset) on the square root of the rotational rate. This dependence was analyzed by using the Levich equation where n = 1 is the number of electrons transferred, D denotes the diffusion coefficient and c denotes the bulk concentration of the reacting species, ν = 0.008917 cm 2 s –1 is the kinematic viscosity of water at 25 °C, and ω is the angular frequency of rotation.…”
Section: Resultsmentioning
confidence: 99%
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“…Well-defined limiting currents were reached for both the oxidation and reduction reactions, showing an excellent linear dependence ( R 2 = 0.9996, with a zero offset) on the square root of the rotational rate. This dependence was analyzed by using the Levich equation where n = 1 is the number of electrons transferred, D denotes the diffusion coefficient and c denotes the bulk concentration of the reacting species, ν = 0.008917 cm 2 s –1 is the kinematic viscosity of water at 25 °C, and ω is the angular frequency of rotation.…”
Section: Resultsmentioning
confidence: 99%
“…Easy to construct with a variety of electrode materials and amenable to rigorous theoretical treatment, the rotating disk electrode (RDE) is the most widely employed hydrodynamic method used for the investigation of electrode processes . In an RDE system, stationary concentration profiles are attained rather quickly and steady-state current/potential characteristics can be measured.…”
mentioning
confidence: 99%
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“…Following Levich’s seminal discovery of the rotating disk electrode (RDE) and establishment of the mathematical background around 1944, they have been extensively used to monitor/screen the electrochemical processes. , One such important electrochemical processes is the oxygen reduction reaction (ORR), which is considered to be a decisive player in the performance evaluation of fuel cells and metal–air batteries. Traditionally, the RDE is used to record the ORR polarization curve on any given electrocatalyst prior to its recommendation in electrochemical devices such as fuel cells (FCs) and metal–air batteries (MABs). , Interestingly, the RDE allows us to identify kinetic, mixed (kinetic + diffusion), and diffusion-limited regions in ORR polarization curves along with the widely accepted concomitant matrices such as the onset potential ( E onset ), half-wave potential ( E 1/2 ), and diffusion-limited current density ( J d ) for apprising the electrochemical performance of any given electrocatalyst. An electrocatalyst offering a more positive E onset , E 1/2 , and high J d values is considered to be the most effective. , Similarly, the matrices used in electrochemical devices such as FCs, as deduced from their respective polarization and power density curves, are the open circuit voltage (OCV), maximum withdrawable power density ( P max ), and associated loss in the ohmic region. ,, …”
Section: Introductionmentioning
confidence: 99%
“…In the last two decades, the immense growth in the development and design of ecofriendly sustainable energy devices has driven a large number of researchers across the globe (in either developed or developing nations) to find, develop, and design robust and effective oxygen electrocatalysts. This is obvious from the increase of scientific journals and publications across the publishing houses (Figure ). A careful observation of already published scientific contributions suggests that, in a large fraction of the literature, ORR studies (with matrices like E onset , E 1/2 , and high J d ) have been carried out to claim better prospective oxygen electrocatalysts (Figure a). ,, In all of these scientific contributions, authors have concluded that the electrocatalysts are suitable for electrochemical devices such as FCs and MABs based on ORR parameters.…”
Section: Introductionmentioning
confidence: 99%