ЕМКОСТЬ ДВОЙНОГО ЭЛЕКТРИЧЕСКОГО СЛОЯ НА МЕТАЛЛАХ ПОДГРУППЫ МЕДИ В РАСПЛАВАХ ГАЛОГЕНИДОВ ЩЕЛОЧНЫХ МЕТАЛЛОВ

科研成果: Article同行评审

摘要

He capacitance-potential curve shape of metal Au, Ag and Cu electrodes was investigated in 9 molten salts: sodium, potassium and cesium chlorides, bromides and iodides. On Au, The dependence curve of the potential capacitance has an additional minimum at the anodic branch. On Ag, the same minimum is less defined and can be seen only at low AC frequencies and only in cesium halogenides. On Cu, the additional minimum is not observed in all salts studied in this work. The larger cation and/or anion radii shift cathodic and anodic minima towards each other. The electrode metal (M = Au, Ag or Cu) and adsorbed halogenide (X = Cl, Br or I) mechanism of specific adsorption is discussed; forming [MX2] - complexes is suggested to be the reason for surface recharge in the polarization area positive to the potential of zero charge. Reduction and total disappearance of the observed anodic minimum for silver and copper is explained by less bond strength of these complexes.
投稿的翻译标题Capacity of Double Electric Layer of IB Metal Electrodes in Alkali Halogenide Melts
源语言Russian
页(从-至)39-50
页数12
期刊Расплавы
5
Published - 2015

GRNTI

  • 31.00.00 CHEMISTRY

Level of Research Output

  • VAK List

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