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Oxygen evolution on Ru1 − x Ni x O2 − y nanocrystalline electrodes

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Abstract

Nanocrystalline Ru1 − x Ni x O2 − y with 0.02 < x < 0.30 were prepared by a sol–gel approach at temperatures between 300 and 600 °C. XRD patterns of the prepared materials indicate a single-phase character conforming to a tetragonal syngony. All prepared materials are sufficiently stable in acid media and show activity towards oxygen evolution. The activity towards oxygen evolution reaction of the materials with constant chemical composition decreases with increasing particle size. The increasing Ni content enhances the electrocatalytic activity in a stepwise manner with abrupt changes for materials containing approximately 5% or 15% of the cationic sites substituted by Ni.

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Acknowledgement

This work was supported by the Academy of Sciences of the Czech Republic under contract no. KAN100400702.

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Authors and Affiliations

  1. J. Heyrovský Institute of Physical Chemistry, Academy of Sciences of the Czech Republic, Dolejškova 3, 18223, Prague, Czech Republic

    Kateřina Macounová, Jakub Jirkovský, Marina V. Makarova, Jiří Franc & Petr Krtil

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  1. Kateřina Macounová
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  2. Jakub Jirkovský
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  3. Marina V. Makarova
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  4. Jiří Franc
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  5. Petr Krtil
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Correspondence to Petr Krtil.

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Macounová, K., Jirkovský, J., Makarova, M.V. et al. Oxygen evolution on Ru1 − x Ni x O2 − y nanocrystalline electrodes. J Solid State Electrochem 13, 959–965 (2009). https://doi.org/10.1007/s10008-008-0624-1

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  • DOI: https://doi.org/10.1007/s10008-008-0624-1

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