A thermostatic cell with gas diffusion electrode for oxygen reduction reaction under fuel cell relevant conditions

Yan Xia Chen, Ming Fang Li, Ling Wen Liao, Jie Xu, Shen Ye

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)

Abstract

A thermostatic cell with gas diffusion electrode (GDE) as working electrode has been developed, where gas reactant is directly supplied to the catalysts surface through the porous GDE. The setup greatly eliminates the interferences of temperature-dependent change in mass transport (solubility, diffusion coefficient) of gaseous reactants on the kinetic analysis, as demonstrated by results from the cyclic voltammetric measurements of oxygen reduction reaction (ORR) on Pt-GDE at various temperatures. In contrast to the previous studies using rotating disk electrode or flow cell systems, a monotonically increase in the ORR current with decrease in potential from 1.0 to 0.3 V or with the increase in temperature from 5 to 70 °C is observed. The versatile applicability of such setup for the kinetic studies of reactions with gaseous reactants is discussed.

Original languageEnglish
Pages (from-to)1434-1436
Number of pages3
JournalElectrochemistry Communications
Volume11
Issue number7
DOIs
Publication statusPublished - 2009 Jul
Externally publishedYes

Keywords

  • Fuel cell
  • Gas diffusion electrode
  • Oxygen reduction reaction
  • Thermostatic cell

ASJC Scopus subject areas

  • Electrochemistry

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