6533b85efe1ef96bd12bfc97
RESEARCH PRODUCT
An electrochemical impedance and ac-electrogravimetry study of PNR films in aqueous salt media
Hubert PerrotMichel KeddamD. BenitoD. BenitoClaude GabrielliFrancisco VicenteJosé Juan García-jareñosubject
chemistry.chemical_classificationAqueous solutionHydroniumInorganic chemistryAnalytical chemistrySalt (chemistry)Concentration effectElectrochemistrylcsh:Chemistrychemistry.chemical_compoundlcsh:Industrial electrochemistrylcsh:QD1-999chemistryElectrogravimetryElectrochemistryCounterionlcsh:TP250-261Electrode potentialdescription
Electrochemical impedance spectra and ac-eletrogravimetry of poly(neutral red) films are studied in different aqueous media. The dependence of these experimental data on the nature of alkaline cation and monovalent anion present in the solution and on the pH is analysed. During the electrochemical processes, it is observed that all three species—the salt cation, the salt anion and the hydronium ion—participate to balance the electrical charge within the film. It is also possible to conclude that the participation of anions takes place faster than hydronium ions participation. Besides, the relative participation of these species is related to the pH of the solution. Keywords: Poly (neutral red), Ac-electrogravimetry, Counterion, Charge transport
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2002-08-01 |