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Oxygen Reduction on Carbon Cryogel-Supported Pt Nanoparticles in Acid Media

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Abstract:

The kinetics of oxygen reduction (ORR) on carbon cryogel supported Pt nanoparticles (Pt / C) in acid solution was studied using the rotating disk electrode technique. This electrocatalyst was prepared by a modified polyol synthesis method and characterized by transmission electron microscopies. The kinetics of ORR shows a significant enhancement at Pt nanoparticle surfaces as compared with the same reaction on polycrystalline Pt surface. The four-electron reduction, with a first-charge transfer-rate determining step, has been found to be operative. However, the specific activity of the Pt / C is similar to that of the polycrystalline Pt electrocatalyst.

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Periodical:

Materials Science Forum (Volume 518)

Pages:

289-294

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.518.289

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Online since:

July 2006

Authors:

Lj.M. Gajić-Krstajić, T.Lj. Trišović, B. Babić, Lj.M. Vračar

Keywords:

Carbon Cryogel, Nanoparticle, Oxygen Reduction, Platinum Catalyst

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© 2006 Trans Tech Publications Ltd. All Rights Reserved

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References

[1] M. Tarasevich, R. Sadkowski and E. Yeager: in Comprenhensive Treatise of Electrochemistry, Vol. 6; B.E. Conway, J. O`M. Bockris, E. Yeager, S.U.M. Khan and R. E White, Eds. (Plenum Press, New York 1983), pp.301-398.

DOI: 10.1007/978-1-4613-3584-9_6

Google Scholar

[2] R.R. Adžić: in Frontiers in Electrochemistry, Vol. 5, Electrocatalysis, J. Lipkowski and P.N. Ross, Eds. (VCH Publishers, New York 1998), pp.197-242.

Google Scholar

[3] S. Gottesfeld and T.A. Zawodzinski: in Advances in Electrochemical Science and Engeneering; Vol 5, R. C. Alkire and D.M. Kolb, Eds. (Wiley-VCH, Weinham 1997).

Google Scholar

[4] F. Rodriguez-Reinoso: Carbon Vol. 36 (1998), p.159.

Google Scholar

[5] E. Auer, A. Freund, J. Pietsch and T. Tacke: Appl. Catal. A Vol. 173 (1998), p.259.

Google Scholar

[6] T. Toda, H. Igarashi and M. Watanabe: J. Electroanal. Chem. Vol. 460 (1999), p.258.

Google Scholar

[7] B. Babić, B. Kaluñerović, Lj. Vračar and N.V. Krstajić: Carbon Vol. 42 (2004), p.2617.

Google Scholar

[8] R.W. Pekala: J. Matter. Sci. Vol. 24 (1989), p.3221.

Google Scholar

[9] CRC Handbook of Chemistry and Physics, 75 th ed; R.C. West, Ed. (CRC Press Boca Raton, FL 1993).

DOI: 10.1093/clinchem/47.11.2075a

Google Scholar

[10] N.M. Marković, H.A. Gasteiger, B.N. Grgur and P.N. Ross: J. Electroanal. Chem. Vol. 467 (1999), p.157.

Google Scholar

[11] F. Maillard, M. Martin, F. Gloaguen and J. -M. Leger: Electrochim. Acta Vol. 47 (2002), p.3431.

Google Scholar