TY - GEN
T1 - Oxygen reduction activity of a copper complex of 3,5-diamino-1,2,4-triazole supported on carbon black
AU - Thorum, Matthew S.
AU - Yadav, Jessica
AU - Gewirth, Andrew A.
PY - 2009
Y1 - 2009
N2 - 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.
AB - 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.
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M3 - Conference contribution
AN - SCOPUS:78649780670
SN - 9780841200050
T3 - ACS National Meeting Book of Abstracts
BT - American Chemical Society - 238th National Meeting and Exposition, ACS 2009, Abstracts of Scientific Papers
T2 - 238th National Meeting and Exposition of the American Chemical Society, ACS 2009
Y2 - 16 August 2009 through 20 August 2009
ER -