Theoretical analysis of microelectrode arrays under forced convection

Nicholas S. Georgescu, Daniel Alberto Scherson

研究成果: Article

2 引用 (Scopus)

抄録

Numerical solutions to the equation that governs steady-state mass transport to a hexagonal array of small redox-active disks embedded in an otherwise inert rotating disk electrode, RDE, under both diffusion-limited and mixed, first order kinetic control were obtained using COMSOL. Analytical expressions were found, which accurately reproduced the simulations, yielding, for limiting cases, a behavior in agreement with that reported in the literature. This formalism was applied to the analysis of thin films of nanoparticles dispersed in inert high area supports attached to the surface of an inactive RDE. The results obtained made it possible to verify that, at loadings within the range of relevance to electrocatalyic materials for low temperature fuel cells, the use of a modified Koutecky-Levich-like equation for determining rate constants of first order redox processes is indeed warranted.

元の言語English
ページ(範囲)E3022-E3025
ジャーナルJournal of the Electrochemical Society
164
発行部数11
DOI
出版物ステータスPublished - 2017 1 1
外部発表Yes

Fingerprint

Microelectrodes
forced convection
Forced convection
rotating disks
Rotating disks
fuel cells
Fuel cells
Rate constants
Mass transfer
formalism
Nanoparticles
Thin films
nanoparticles
Electrodes
Kinetics
electrodes
kinetics
thin films
simulation
Temperature

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Renewable Energy, Sustainability and the Environment
  • Condensed Matter Physics
  • Surfaces, Coatings and Films
  • Materials Chemistry
  • Electrochemistry

これを引用

Theoretical analysis of microelectrode arrays under forced convection. / Georgescu, Nicholas S.; Scherson, Daniel Alberto.

:: Journal of the Electrochemical Society, 巻 164, 番号 11, 01.01.2017, p. E3022-E3025.

研究成果: Article

Georgescu, Nicholas S. ; Scherson, Daniel Alberto. / Theoretical analysis of microelectrode arrays under forced convection. :: Journal of the Electrochemical Society. 2017 ; 巻 164, 番号 11. pp. E3022-E3025.
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