Abstract
New original heterostructures that incorporate graphite and iron titanium (TiFe) intermetallide as materials of two electrodes and KOH·2H2O as a solid electrolyte (T melt = 315 K) are described. For room-temperature activated cells, the emf amounts to ∼1.4–1.1 V at 263–310 K, where the contribution of the TiFeH x /KOH · 2H2O heteroboundary accounts for 0.9–0.7 V. The replacement of protium by deuterium leads to a ∼100 mV change in the potential of this heteroboundary, which is evidence for a potential-determining role of protons. The isotope exchange confirms the kinetic reversibility of the proton transition via the TiFeH x /KOH · 2H2O heteroboundary, which is also indicative of the formation of a protonic heterojunction.
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Original Russian Text © Yu.M. Baikov, B.T. Melekh, I.V. Korkin, 2010, published in Pis’ma v Zhurnal Tekhnicheskoĭ Fiziki, 2010, Vol. 36, No.10, pp. 17–23.
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Baikov, Y.M., Melekh, B.T. & Korkin, I.V. Protonic heterojunction in intermetallide-potassium hydroxide dihydrate-graphite heterostructure. Tech. Phys. Lett. 36, 451–453 (2010). https://doi.org/10.1134/S1063785010050184
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DOI: https://doi.org/10.1134/S1063785010050184