Estimating Parameters for Rates of CO Poisoning and Recovery in a PEMFC Using a Pt/Ru-C Anode

Abstract

A study of the effects of cell temperature and pressure on anode polarization was achieved in this paper. A Langmuir and Temkin isotherm was used to study the CO adsorption equilibrium and the Heyrowski-Volmer mechanism for H2 oxidation on a Pt/Ru-C catalyst. The anode overpotential curves were separated into four regions so that the adsorption rate constant for H2 on Pt/Ru-C alloy could be determined. This separation allowed for the generation of a CO isotherm and it provided Langmuir parameters to describe the CO adsorption equilibrium as a function of temperature and pressure.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 2004
Accession Number
ADA446863

Entities

People

  • J. W. Van Zee
  • Tochi Nwoga

Organizations

  • University of South Carolina

Tags

Communities of Interest

  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Adsorption
  • Anodic Polarization
  • Catalysts
  • Cells
  • Chemical Engineering
  • Current Density
  • Data Sets
  • Engineering
  • Equations
  • Fuel Cells
  • Isotherms
  • Mass Transfer
  • Partial Pressure
  • Poisoning
  • Polarization
  • Recovery
  • Steady State

Readers

  • Electrochemical Engineering/ Fuel Cell Technologies