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  Synchrotron-based structural and spectroscopic studies of ball milled RuSeMo and RuSnMo particles as oxygen reduction electrocatalyst for PEM fuel cells.

Suarez-Alcantara, K., Ezeta-Mejia, A., Ortega-Aviles, M., Haase, D., Arce-Estrada, E., Gonzalez-Huerta, R. G., et al. (2014). Synchrotron-based structural and spectroscopic studies of ball milled RuSeMo and RuSnMo particles as oxygen reduction electrocatalyst for PEM fuel cells. International Journal of Hydrogen Energy, 39(29), 16715-16721. doi:10.1016/j.ijhydene.2014.03.220.

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Item Permalink: https://hdl.handle.net/11858/00-001M-0000-002D-7DD6-D Version Permalink: https://hdl.handle.net/11858/00-001M-0000-002D-7DD7-B
Genre: Journal Article

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Suarez-Alcantara, K., Author
Ezeta-Mejia, A., Author
Ortega-Aviles, M., Author
Haase, D., Author
Arce-Estrada, E., Author
Gonzalez-Huerta, R. G., Author
Solorza-Feria, O., Author
Canton, S. E.1, Author           
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1Research Group of Structural Dynamics of (Bio)Chemical Systems, MPI for Biophysical Chemistry, Max Planck Society, ou_578564              

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 Abstract: Particles of RuSeMo and RuSnMo have been produced by ball milling; they present catalytic activity towards the oxygen reduction reaction (ORR) in acid media. A Tafel slope close to 120 mV/dec was found for both materials. Their morphology was first characterized by scanning electron microscopy (SEM) and transmission electron microscopy (TEM). SEM and TEM images reveal particles in the sub-micrometer range. The structure of the materials was further probed with synchrotron radiation powder X-ray diffraction (SR-PXD) and X-ray absorption spectroscopy (XAS). SR-PXD reveals the existence of metallic Ru as the main phase and the formation of phases such as RuSe2 in RuSeMo and Ru3Sn7 in RuSnMo. Mo was found to form solid solution into the RuSe2 phase in ball milled RuSeMo. Finally, The Ru L-3-edge and Mo L-3-edge XAS fingerprints were correlated with the catalytic activity towards ORR.

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Language(s): eng - English
 Dates: 2014-05-032014-10-02
 Publication Status: Issued
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 Rev. Type: Peer
 Identifiers: DOI: 10.1016/j.ijhydene.2014.03.220
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Title: International Journal of Hydrogen Energy
Source Genre: Journal
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Pages: - Volume / Issue: 39 (29) Sequence Number: - Start / End Page: 16715 - 16721 Identifier: -