Hostname: page-component-586b7cd67f-gb8f7 Total loading time: 0 Render date: 2024-11-28T00:58:42.831Z Has data issue: false hasContentIssue false
  • English
  • Français

Bi-functional oxygen electrocatalysts based on Palladium oxide-Ruthenium oxide composites

Published online by Cambridge University Press:  28 December 2012

Jaka Sunarso ,
Angel A.J. Torriero ,
Patrick C. Howlett ,
Douglas R. MacFarlane  and
Maria Forsyth
Jaka Sunarso
Affiliation:
Australian Research Council (ARC) Center of Excellence for Electromaterials Science, Institute for Frontier Materials, Deakin University, 221 Burwood Highway, Burwood, Victoria 3125, Australia
Angel A.J. Torriero
Affiliation:
Australian Research Council (ARC) Center of Excellence for Electromaterials Science, Institute for Frontier Materials, Deakin University, 221 Burwood Highway, Burwood, Victoria 3125, Australia
Patrick C. Howlett
Affiliation:
Australian Research Council (ARC) Center of Excellence for Electromaterials Science, Institute for Frontier Materials, Deakin University, 221 Burwood Highway, Burwood, Victoria 3125, Australia
Douglas R. MacFarlane
Affiliation:
Australian Research Council (ARC) Center of Excellence for Electromaterials Science, School of Chemistry, Monash University, Wellington Road, Clayton, Victoria 3800, Australia
Maria Forsyth
Affiliation:
Australian Research Council (ARC) Center of Excellence for Electromaterials Science, Institute for Frontier Materials, Deakin University, 221 Burwood Highway, Burwood, Victoria 3125, Australia
Get access

Abstract

Bi-functional oxygen electrodes are an enabling component for rechargeable metal-air batteries and regenerative fuel cells, both of which are regarded as the next-generation energy devices with zero emission. Nonetheless, at the present, no single metal oxide component can catalyze both oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) with high performance which leads to large overpotential between ORR and OER. This work strives to address this limitation by studying the bi-functional electrocatalytic activity of the composite of a good ORR catalyst compound (e.g. palladium oxide, PdO) and a good OER catalyst compound (e.g. ruthenium oxide, RuO2) in alkaline solution (0.1M KOH) utilizing a thin-film rotating disk electrode technique. The studied compositions include PdO, RuO2, PdO/RuO2 (25wt.%/75wt.%), PdO/RuO2 (50wt.%/50wt.%) and PdO/RuO2 (75wt.%/25wt.%). The lowest overpotential (e.g. E (2 mA cm−2) - E (-2 mA cm−2)) of 0.82 V is obtained for PdO/RuO2 (25wt.%/75wt.%) (versus Ag|AgCl (3M NaCl) reference electrode).

Keywords

PdRuO
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1491: Symposium C – Electrocatalysis and Interfacial Electrochemistry for Energy Conversion and Storage , 2013 , mrsf12-1491-c06-06
Copyright
Copyright © Materials Research Society 2012

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

Armand, M. and Tarascon, J.-M., Nature 451, 652 (2008).CrossRefGoogle Scholar
Jörissen, L., J. Power Sources 155, 23 (2006).CrossRefGoogle Scholar
Lu, Y. C., Xu, Z., Gasteiger, H. A., Chen, S., Hamad-Schifferli, K. and Shao-Horn, Y., J. Am. Chem. Soc. 132, 12170 (2010).CrossRefGoogle Scholar
Marković, N. M. and Ross, P. N. Jr., J. Electrochem. Soc. 141, 2590 (1994).CrossRefGoogle Scholar
Blizanac, B. B., Ross, P. N. and Marković, N. M., J. Phys. Chem. B 110, 4735 (2006).CrossRefGoogle Scholar
Sunarso, J., Torriero, A. A. J., Zhou, W., Howlett, P. C. and Forsyth, M., J. Phys. Chem. C 116, 5827 (2012).CrossRefGoogle Scholar
TIMCAL, C.NERGYTM in TIMCAL Ltd. Headquarters, Strada Industriale 1, CH-6743 Bodio, Switzerland (2010).Google Scholar
Schmidt, T. J., Gasteiger, H. A., Stäb, G. D., Urban, P. M., Kolb, D. M. and Behm, R. J., J. Electrochem. Soc. 145, 2354 (1998).CrossRefGoogle Scholar
ICDD, ICDD PDF-4 Release 2010 in Joint Committee on Powder Diffraction Standards (JCPDS)-International Centre for Diffraction Data (ICDD), Pennsylvania (2010).Google Scholar