Distinguishing interfacial double layer and oxide-based capacitance on gold and pre-oxidized Fe-Cr in 1-ethyl-3-methylimidazolium methanesulfonate room temperature ionic liquid aqueous mixture

Distinguishing interfacial double layer and oxide-based capacitance on gold and pre-oxidized Fe-Cr in 1-ethyl-3-methylimidazolium methanesulfonate room temperature ionic liquid aqueous mixture

The frequency-dependent impedance of a metal/oxide/room temperature ionic liquid (RTIL) interface was separated into oxide layer (Cox) and double layer (Cdl) capacitances using electrochemical impedance spectroscopy (EIS). A pre-formed oxide of known initial thickness on Fe-20 at.% Cr was investigat...

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Bibliographic Details
Main Authors: Junsoo Han, Ho Lun Chan, Marlene G. Wartenberg, Helge H. Heinrich, John R. Scully
Format: Article
Language:English
Published: Elsevier 2021-01-01
Series:Electrochemistry Communications
Subjects:
Double layer capacitance
Oxide capacitance
Constant-phase element
EIS
Room temperature ionic liquid
Online Access:http://www.sciencedirect.com/science/article/pii/S1388248120302514

Internet

http://www.sciencedirect.com/science/article/pii/S1388248120302514

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