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PtRu Alloy Colloids as Precursors for Fuel Cell Catalysts: A Combined XPS, AFM, HRTEM, and RDE Study
Abstract
The electrocatalytic activity of bimetallic Pt 0.5 Ru 0.5 N ( oct ) 4 Cl colloids supported on Vulcan XC72 toward the oxidation of CO and CO / H 2 mixtures was investigated by using a newly developed method to characterize supported catalysts in a rotating disk electrode configuration. Prior to the electrochemical measurements, the surfactant was removed by reactive annealing. Parallel atomic force microscopy (AFM) measurements on a planar model system [ Pt 0.5 Ru 0.5 N ( oct ) 4 Cl on highly oriented pyrolitic graphite] indicate minor sintering in good agreement with high‐resolution transmission electron microscopy (HRTEM) measurements on the Vulcan‐supported catalyst which yield a dispersion of ∼43%. At 60 °C, the electrochemical activity of the PtRu colloid catalyst toward the oxidation of 2% CO in H 2 is equal to or slightly higher than that of a commercial PtRu catalyst (E‐TEK). Comparison of the CO tolerance of the PtRu‐colloid/Vulcan with that of proton exchange membrane (PEM) fuel cells was facilitated on the basis of mass‐specific current densities, providing a scale‐up method for predicting the performance of catalysts in a PEM fuel cell.
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Recent advances in activity and durability enhancement of Pt/C catalytic cathode in PEMFC
Yu, X., & Ye, S. (2007) · Journal of Power Sources · doi:10.1016/j.jpowsour.2007.07.048 · Cited by 1,098
The CO Poisoning Effect in PEMFCs Operational at Temperatures up to 200°C
Li, Q., He, R., Gao, J.-A., Jensen, J. O., & Bjerrum, N. J. (2003) · Journal of The Electrochemical Society · doi:10.1149/1.1619984 · Cited by 586
Recent advances in activity and durability enhancement of Pt/C catalytic cathode in PEMFC
Yu, X., & Ye, S. (2007) · Journal of Power Sources · doi:10.1016/j.jpowsour.2007.07.049 · Cited by 480
Liu, Z., Jackson, G. S., & Eichhorn, B. W. (2010) · Angewandte Chemie International Edition · doi:10.1002/anie.200907019 · Cited by 192
Synthesis of high-surface-area ruthenium oxide aerogels by non-alkoxide sol–gel route
Suh, D. J., Park, T.-J., Kim, W.-I., & Hong, I.-K. (2003) · Journal of Power Sources · doi:10.1016/s0378-7753(02)00617-1 · Cited by 44
Álvarez, G., Alcaide, F., Miguel, O., Calvillo, L., Lázaro, M. J., Quintana, J. J., Calderón, J. C., & Pastor, E. (2010) · Journal of Solid State Electrochemistry · doi:10.1007/s10008-009-0913-3 · Cited by 35
Efficient fuel cell catalysts emerging from organometallic chemistry
Bönnemann, H., & Khelashvili, G. (2010) · Applied Organometallic Chemistry · doi:10.1002/aoc.1613 · Cited by 30
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Metadata
- Authors
- Schmidt, T. J., Noeske, M., Gasteiger, H. A., Behm, R. J., Britz, P., & Bönnemann, H.
- Venue
- Journal of The Electrochemical Society
- Publisher
- The Electrochemical Society
- Published
- 1998-03-01
- Volume
- 145
- Issue
- 3
- Pages
- 925-931
- ISSN
- 0013-4651 (ISSN-L)
- 1945-7111
- OpenAlex
- W1496515981
- Cited by
- 253
- References
- 0
- FWCI
- 7.97
- Type
- journal article
- Language
- en
- Open access
- closed
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