Hydrogen oxidation reaction on thin platinum electrodes in the polymer electrolyte fuel cell
2010 (English)In: Electrochemistry communications, ISSN 1388-2481, E-ISSN 1873-1902, Vol. 12, no 11, 1585-1588 p.Article in journal (Refereed) Published
A method for measuring the kinetics of the hydrogen oxidation reaction (HOR) in a fuel cell under enhanced mass transport conditions is presented. The measured limiting current density was roughly 1600 mA cmPt− 2, corresponding to a rate constant of the forward reaction in the Tafel step of 0.14 mol m− 2 s− 1 at 80 °C and 90% RH. The exchange current density for the HOR was determined using the slope at low overvoltages and was found to be 770 mA cmPt− 2. The high values for the limiting and exchange current densities suggest that the Pt loading in the anode catalyst can be reduced further without imposing measurable voltage loss.
Place, publisher, year, edition, pages
2010. Vol. 12, no 11, 1585-1588 p.
Hydrogen oxidation reaction, Limiting current density, Exchange current density, PEMFC, Fuel cell, Thermal evaporation
IdentifiersURN: urn:nbn:se:kth:diva-25239DOI: 10.1016/j.elecom.2010.08.037ISI: 000284386100033ScopusID: 2-s2.0-78049244427OAI: oai:DiVA.org:kth-25239DiVA: diva2:356664
QC 201507162010-10-132010-10-132015-07-16Bibliographically approved