Reductive annealing for generating Se doped 20 wt% Ru/C cathode catalysts for the oxygen reduction reaction

K. S. Nagabhushana, E. Dinjus, H. Bönnemann, V. Zaikovskii, C. Hartnig, G. Zehl, I. Dorbandt, S. Fiechter, P. Bogdanoff

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

Reductive annealing was chosen as a method for the syntheses of Se modified Ru/C catalysts. Initial preparation of a 20 wt% Ru/C was performed by impregnating RuCl3•2H2O on Vulcan XC72 with subsequent conditioning using H2 at 250 °C for 4 h. Surface treatment of Ru/C by SeO2 followed by reductive annealing produced Se modified Ru/C catalysts with a pre-determined Ru:Se = 1:0.15 and 1:1 a/o. Structural characterization was carried out using HRTEM while electrochemical characterization was performed using RDE measurements. It is concluded that the presence of Se on Ru has a positive effect on the oxygen reduction reaction of RuSe/C catalyst systems with an optimal loading of Se close to a Ru:Se ratio of 1:0.15 a/o. Overloading of selenium led to neutralization of its promoting effect.

Original languageEnglish
Pages (from-to)1515-1522
Number of pages8
JournalJournal of Applied Electrochemistry
Volume37
Issue number12
DOIs
Publication statusPublished - 01-12-2007
Externally publishedYes

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Cathodes
Annealing
Oxygen
Catalysts
Selenium
Surface treatment

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)
  • Materials Chemistry
  • Electrochemistry

Cite this

Nagabhushana, K. S., Dinjus, E., Bönnemann, H., Zaikovskii, V., Hartnig, C., Zehl, G., ... Bogdanoff, P. (2007). Reductive annealing for generating Se doped 20 wt% Ru/C cathode catalysts for the oxygen reduction reaction. Journal of Applied Electrochemistry, 37(12), 1515-1522. https://doi.org/10.1007/s10800-007-9423-0
Nagabhushana, K. S. ; Dinjus, E. ; Bönnemann, H. ; Zaikovskii, V. ; Hartnig, C. ; Zehl, G. ; Dorbandt, I. ; Fiechter, S. ; Bogdanoff, P. / Reductive annealing for generating Se doped 20 wt% Ru/C cathode catalysts for the oxygen reduction reaction. In: Journal of Applied Electrochemistry. 2007 ; Vol. 37, No. 12. pp. 1515-1522.
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Nagabhushana, KS, Dinjus, E, Bönnemann, H, Zaikovskii, V, Hartnig, C, Zehl, G, Dorbandt, I, Fiechter, S & Bogdanoff, P 2007, 'Reductive annealing for generating Se doped 20 wt% Ru/C cathode catalysts for the oxygen reduction reaction', Journal of Applied Electrochemistry, vol. 37, no. 12, pp. 1515-1522. https://doi.org/10.1007/s10800-007-9423-0

Reductive annealing for generating Se doped 20 wt% Ru/C cathode catalysts for the oxygen reduction reaction. / Nagabhushana, K. S.; Dinjus, E.; Bönnemann, H.; Zaikovskii, V.; Hartnig, C.; Zehl, G.; Dorbandt, I.; Fiechter, S.; Bogdanoff, P.

In: Journal of Applied Electrochemistry, Vol. 37, No. 12, 01.12.2007, p. 1515-1522.

Research output: Contribution to journalArticle

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T1 - Reductive annealing for generating Se doped 20 wt% Ru/C cathode catalysts for the oxygen reduction reaction

AU - Nagabhushana, K. S.

AU - Dinjus, E.

AU - Bönnemann, H.

AU - Zaikovskii, V.

AU - Hartnig, C.

AU - Zehl, G.

AU - Dorbandt, I.

AU - Fiechter, S.

AU - Bogdanoff, P.

PY - 2007/12/1

Y1 - 2007/12/1

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