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Specific features of the formation, catalytic activity, and corrosion stability of PdCu electrolytic co-deposit

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Abstract

A mixed electrolytic deposit (ED) of PdCu (~20 at.% Cu) is synthesized from a solution of 1 mМ PdSO4 + 5 mМ CuSO4 + 0.5 M H2SO4 in the region of copper underpotential deposition (+400 mV vs. RHE). The incorporation of copper into the Pd deposit increases its true surface area (Strue) by a factor of ~20 and changes its hydrogen sorption characteristics. The ED PdCu demonstrates higher specific activity in FAOR as compared with individual Pd deposit (Еdep = 0.4 V). The specific solubility of Pd from ED PdCu is shown to be 2–3 times lower than the solubility of ED Pd; however, its total solubility from PdCu increases due to the strong increase in Strue.

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Acknowledgments

This work was supported by the Russian Foundation for Basic Research, Project No. 19-03-00309, and in part by the M.V. Lomonosov Moscow State University Program of Development.

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Authors and Affiliations

  1. Lomonosov Moscow State University, Moscow, 119992, Leninskie Gory, Russia

    Boris I. Podlovchenko, Tatyana D. Gladysheva, Yurii M. Maksimov, Dmitry S. Volkov & Konstantin I. Maslakov

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  1. Boris I. Podlovchenko
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  2. Tatyana D. Gladysheva
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  3. Yurii M. Maksimov
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  4. Dmitry S. Volkov
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  5. Konstantin I. Maslakov
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Correspondence to Boris I. Podlovchenko.

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Podlovchenko, B.I., Gladysheva, T.D., Maksimov, Y.M. et al. Specific features of the formation, catalytic activity, and corrosion stability of PdCu electrolytic co-deposit. J Solid State Electrochem 24, 1439–1444 (2020). https://doi.org/10.1007/s10008-020-04612-3

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  • DOI: https://doi.org/10.1007/s10008-020-04612-3

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