Effects of iron-phosphate coating on Ru dissolution in the PtRu thin-film electrodes

Journal of Materials Research

Volumn 24, Issue 1, 2009, Pages 140-144

  Park, Yejun ^a   Lee, Byungjoo ^a   Kim, Chunjoong ^a   Kim, Jongmin ^a   Park, Byungwoo ^a  

^a Seoul National University   (South Korea)

Author keywords

[No Author keywords available]

Indexed keywords

ELECTRODES; ELECTROLYSIS; ELECTROLYTES; PHOSPHATE COATINGS; PLATINUM ALLOYS; PROTECTIVE COATINGS; THIN FILM DEVICES;

AQUEOUS ELECTROLYTES; COATING LAYERS; DIRECT CONTACTS; NANO-SCALE COATINGS; POTENTIAL CYCLES; THIN-FILM ELECTRODES;

DISSOLUTION;

EID: 61749084026     PISSN: 08842914     EISSN: None     Source Type: Journal    
DOI: 10.1557/jmr.2009.0013     Document Type: Article

References (18)

1. L. Carrette, K.A. Friedrich, and U. Stimming: Fuel cells - Fundamentals and applications. Fuel Cells 1, 5 (2001).
2. E. Reddington, A. Sapienza, B. Garau, R. Viswanathan, S. Sarangapani, E.S. Smotkin, and T.E. Mallouk: Combinatorial electrochemistry: A highly parallel, optical screening method for discovery of better electrocatalysts. Science 280, 1735 (1998).
3. B. Lee, C. Kim, Y. Park, T-G. Kim, and B. Park: Nanostructured platinum/ iron phosphate thin-film electrodes for methanol oxidation. Electrochem. Solid-State Lett. 9, E27 (2006).
4. M. Watanabe and S. Motoo: Electrocatalysis by ad-atoms: Part II. Enhancement of the oxidation of methanol on platinum by ruthenium ad-atoms. J. Electroanal. Chem. 60, 267 (1975).
5. H. Gasteiger, N. Markovic, P. Ross, and E.J. Cairns: Methanol electrooxidation on well-characterized platinum-ruthenium bulk alloys. J. Phys. Chem. 97, 12020 (1993).
6. J. Goodenough, R. Manoharan, A.K. Shukla, and K.V. Rameshand: Intraalloy electron transfer and catalyst performance: A spectroscopic and electrochemical study. Chem. Mater. 1, 391 (1989).
7. E. Herrero, K. Franaszczuk, and A. Wiekowski: Crystal planes of platinum: An integrated voltammetric and chronoamperometric study. J. Phys. Chem. 98, 5074 (1994).
8. C. Kim, B. Lee, Y. Park, B. Park, J. Lee, and H. Kim: Iron-phosphate/ platinum/carbon nanocomposites for enhanced electrocatalytic stability. Appl. Phys. Lett. 91, 113101 (2007).
9. P. Piela, C. Eickes, E. Brosha, F. Garzon, and P. Zelenay: Ruthenium crossover in direct methanol fuel cell with Pt-Ru black anode. J. Electrochem. Soc. 151, A2053 (2004).
10. B. Lee, C. Kim, Y. Park, Y. Oh, and B. Park: The effects of ruthenium-oxidation states on Ru dissolution in PtRu thin-film electrodes. (unpublished).
11. 2. J. Electrochem. Soc. 151, A801 (2004).
12. 2 cathode material. Chem. Mater. 15, 3190 (2003).
13. 4 nanoparticles. Angew. Chem. Int. Ed. 42, 1618 (2003).
14. M. Pourbaix: Atlas of Biochemical Equilibria in Aqueous Solutions (Gauthier-Villars, Paris, France, 1963), p. 346.
15. T.J. Schmidt, H.A. Gasteiger, G.D. Stäb, P.M. Uraban, D.M. Kolb, and R.J. Behm: Characterization of high surface area electrocatalysts using a rotating disk electrode configuration. J. Electrochem. Soc. 145, 2354 (1998).
16. W. Vielstich: Handbook of Fuel Cells-Fundamentals Technology and Applications, Vol. 2 (John Wiley & Sons, London, UK, 2003), p. 155.
17. C.L. Green and A. Kucernak: Determination of the platinum and ruthenium surface areas in platinum-ruthenium electro-catalysts by underpotential deposition of copper. 2. Effect of surface composition on activity. J. Phys. Chem. B 106, 11446 (2002).
18. W.L. Holstein and H.D. Rosenfeld: In-situ x-ray absorption spectroscopy study of Pt and Ru chemistry during methanol electrooxidation. J. Phys. Chem. B 109, 2176 (2005).