Surface diffusion coefficients, DS, of platinum adatoms were measured in situ on polycrystalline platinum electrodes inmersed in 1 M HClO4, 1 M H3PO4 and 0.5 M H2SO4 electrolytic solutions at different potential values. The change in the DS values observed, as well as the rate of change of DS with the potential value, confirm an adsorbate induced relaxation of Pt electrode surfaces.
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Hidalgo et al. (1995) studied this question.
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