Effect of an organic additive on the impedance of cadmium in alkaline solution

Autor:	M. Z. A. Munshi, J. Parker, J. L. Dawson, A. C. C. Tseung
Rok vydání:	1985
Předmět:	Cadmium Aqueous solution integumentary system General Chemical Engineering Inorganic chemistry chemistry.chemical_element Electrolyte Conductivity Electrochemistry Polyvinyl alcohol chemistry.chemical_compound chemistry Basic solution Electrode Materials Chemistry
Zdroj:	Journal of Applied Electrochemistry. 15:737-744
ISSN:	1572-8838 0021-891X
DOI:	10.1007/bf00620570
Popis:	The a.c. impedance of a planar cadmium electrode in KOH solution was measured over the active and passive region using a potentiostatic technique. Different concentrations of polyvinyl alcohol (PVA) were subsequently introduced into the alkaline solution and the impedance remeasured. It was found that the addition of PVA markedly increased the double layer capacity of the electrode and decreased electrolyte resistance,R sol. The impedance spectra in the presence of PVA were analysed in terms of an equivalent circuit involving the series combination of two double layer capacitances and a resistance proportional to the conductivity of the electrolyte.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::dc7a4b03c9d194b768d45b720f768543 https://doi.org/10.1007/bf00620570 Zobrazit plný text záznamu Full text from SpringerLink