Kinetics of non-platinum group metal catalysts for the oxygen reduction reaction in alkaline medium

M. Piana, S. Catanorchi, H. A. Gasteiger

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

83 Scopus citations

Abstract

Working in the area of alkaline fuel cell and electrolyzer technology, Acta S.p.A. developed over the past two years catalysts without Platinum Group Metals (PGM), named K14 and K18, with high activity for the oxygen reduction reaction (ORR) in alkaline medium. The comparison of the ORR activity between K14, K18 and commercial 10 wt% Pt on Vulcan XC-72R at 0.9 V vs. RHE (Reversible Hydrogen Electrode) has been carried out using Rotating Disk Electrode (RDE) analysis in 0.1 M KOH, showing how K14 has an activity close to FVC while the ORR activity of K18 is significantly higher. An important advantage of this catalysts is the absence of any oxidation reaction with fuels like alcohols. We used the Rotating Ring-Disk Electrode (RRDE) to detect the peroxide production and to demonstrate for K14 and, most of all, for K18 the almost complete conversion of oxygen via the 4 electrons mechanism.

Original languageEnglish
Title of host publicationECS Transactions - Proton Exchange Membrane Fuel Cells 8
PublisherElectrochemical Society Inc.
Pages2045-2055
Number of pages11
Edition2 PART 2
ISBN (Print)9781566776486
DOIs
StatePublished - 2009
Externally publishedYes
EventProton Exchange Membrane Fuel Cells 8, PEMFC - 214th ECS Meeting - Honolulu, HI, United States
Duration: 12 Oct 200817 Oct 2008

Publication series

NameECS Transactions
Number2 PART 2
Volume16
ISSN (Print)1938-5862
ISSN (Electronic)1938-6737

Conference

ConferenceProton Exchange Membrane Fuel Cells 8, PEMFC - 214th ECS Meeting
Country/TerritoryUnited States
CityHonolulu, HI
Period12/10/0817/10/08

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