Influence of the nature of metal M on the anodic dissolution of PdM electrolytic alloys (M = non-noble metal)

Podlovchenko, B.I.; Maksimov, Y.M.; Kuznetsov, V.V.; Zhulikov, V.V.

Авторы: Podlovchenko Boris I., Maksimov Yurii M., Kuznetsov Vitaly V., Zhulikov Vladimir V.
Журнал: Journal of Solid State Electrochemistry
Год издания: 2026
Издательство: Springer Verlag
Местоположение издательства: Germany
DOI: 10.1007/s10008-026-06550-y
Аннотация: Anodic dissolution of electrolytic deposits of palladium PdM (M = Pb, Cu, Ag, and Mo; [M] < 30 at.%) is studied in H2SO4 and HClO4 solutions at electrode potentials of 0.3–1.25 V (vs. a reversible hydrogen electrode [RHE]) in various regimes. Quantitative data on sample dissolution are obtained using inductively coupled plasma atomic emission spectroscopy (ICP-AES) and inductively coupled plasma mass spectrometry (ICP-MS). The dissolution rates for palladium are compared for binary PdM and pure palladium electrolytic deposits obtained under similar conditions. It is found that the total Pd dissolved from PdM is higher than that from the monometallic palladium deposits, due to the increase in the real surface area caused by the incorporation of the second metal. On the other hand, the normalized masses of Pd dissolved from PdCu and PdMo (per cm2 of the real Pd surface) are shown to be lower than in the case of pure Pd. The addition of Ag and Pb to palladium results in increased dissolution of palladium. The dependence of Pd dissolution on the standard electrode potential of the redox pair E°(Mn+/M) and the metal radius r(M) are discussed. The dissolution data for Pd and M from the PdM deposits are compared.
Добавил в систему: Жуликов Владимир Владимирович

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Influence of the nature of metal M on the anodic dissolution of PdM electrolytic alloys (M = non-noble metal)статья