The conditions for electrodeposition of insoluble hydroxides at a cathode surface: A theoretical investigation

P.Gregers Hansen

    Research output: Contribution to journalJournal articleResearch

    Abstract

    The pH values obtained in the vicinity of a cathode surface where hydrogen evolution takes place are discussed using the concept of a diffusion layer. It is shown that a given current density I determines a hydrogen ion concentration Cmax in the solution, above which no hydroxide deposition at the cathode can be expected to take place. The shape of the pH distribution makes it possible to define a hydroxyl ion layer, the thickness of which approaches zero as the hydrogen ion concentration approaches Cmax. It is found that relatively high pH values (11–13) are easily obtained at a cathode surface, even in rather acid solutions. These results find some support in recent experimental work,(1) but further data are desirable.
    Original languageEnglish
    JournalJournal of Inorganic and Nuclear Chemistry
    Volume12
    Issue number1-2
    Pages (from-to)30-37
    ISSN0022-1902
    Publication statusPublished - 1959

    Fingerprint

    Dive into the research topics of 'The conditions for electrodeposition of insoluble hydroxides at a cathode surface: A theoretical investigation'. Together they form a unique fingerprint.

    Cite this