Oxygen reduction activity of a copper complex of 3,5-diamino-1,2,4-triazole supported on carbon black

Matthew S. Thorum, Jessica Yadav, Andrew A Gewirth

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Electrocatalysis of the oxygen reduction reaction (ORR) is currently of widespread interest due to its application in fuel cell cathodes where current Pt catalysts require high overpotentials. Inspired by the remarkably high ORR activity of multi-copper oxidases, we undertook an evaluation of the ORR activity of stable, insoluble copper coordination complexes. Direct precipitation of a complex of copper(II) and 3,5-diamino-1,2,4-triazole onto a carbon black support lead to the formation of an electrocatalyst for the 4 e- reduction of O2 to H2O. The oxygen reduction activity is reported over a wide pH range from 1 to 13 and the onset of the oxygen reduction reaction occurs at potentials as high as 0.86 VRHE. Ex-situ magnetic susceptibility measurements demonstrate the presence of multi-Cu sites on the electrode.

Original languageEnglish (US)
Title of host publicationAmerican Chemical Society - 238th National Meeting and Exposition, ACS 2009, Abstracts of Scientific Papers
StatePublished - Dec 1 2009
Event238th National Meeting and Exposition of the American Chemical Society, ACS 2009 - Washington, DC, United States
Duration: Aug 16 2009Aug 20 2009

Publication series

NameACS National Meeting Book of Abstracts
ISSN (Print)0065-7727

Other

Other238th National Meeting and Exposition of the American Chemical Society, ACS 2009
CountryUnited States
CityWashington, DC
Period8/16/098/20/09

    Fingerprint

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

Cite this

Thorum, M. S., Yadav, J., & Gewirth, A. A. (2009). Oxygen reduction activity of a copper complex of 3,5-diamino-1,2,4-triazole supported on carbon black. In American Chemical Society - 238th National Meeting and Exposition, ACS 2009, Abstracts of Scientific Papers (ACS National Meeting Book of Abstracts).