Electrochemical and geometrical characterization of iridium oxide electrodes in stainless steel substrate

Carmen C. Mayorga Martinez; Rossana E. Madrid; Carmelo J. Felice

doi:10.1016/j.snb.2008.03.037

Electrochemical and geometrical characterization of iridium oxide electrodes in stainless steel substrate

Carmen C. Mayorga Martinez
, Rossana E. Madrid
, Carmelo J. Felice

Universidad Nacional de Tucuman
Consejo Nacional de Investigaciones Científicas y Técnicas

Research output: Contribution to journal › Article › peer-review

27 Scopus citations

Abstract

A geometrical and electrochemical characterization of stainless steel electrodes electrodeposited with iridium oxide (IrO₂) is presented. There is a dramatic increase in the double layer capacitance (C) and an important decrease in the charge transfer resistance (R_ct) after electrodeposition, causing also a significant two orders of magnitude reduction of the electrode-electrolyte interface impedance (EEIZ). These phenomena may be explained by the fine-grained iridium oxide, which has a high grain boundary density and which increases the actual electrodic area. An RC model is presented, which would explain the electrical behaviour of the system.

Original language	English
Pages (from-to)	682-686
Number of pages	5
Journal	Sensors and Actuators, B: Chemical
Volume	133
Issue number	2
DOIs	https://doi.org/10.1016/j.snb.2008.03.037
State	Published - 12 Aug 2008
Externally published	Yes

Keywords

EIROF layers
Electrode-electrolyte impedance
Iridium oxide
Randles model

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10.1016/j.snb.2008.03.037

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title = "Electrochemical and geometrical characterization of iridium oxide electrodes in stainless steel substrate",

abstract = "A geometrical and electrochemical characterization of stainless steel electrodes electrodeposited with iridium oxide (IrO2) is presented. There is a dramatic increase in the double layer capacitance (C) and an important decrease in the charge transfer resistance (Rct) after electrodeposition, causing also a significant two orders of magnitude reduction of the electrode-electrolyte interface impedance (EEIZ). These phenomena may be explained by the fine-grained iridium oxide, which has a high grain boundary density and which increases the actual electrodic area. An RC model is presented, which would explain the electrical behaviour of the system.",

keywords = "EIROF layers, Electrode-electrolyte impedance, Iridium oxide, Randles model",

author = "\{Mayorga Martinez\}, \{Carmen C.\} and Madrid, \{Rossana E.\} and Felice, \{Carmelo J.\}",

year = "2008",

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doi = "10.1016/j.snb.2008.03.037",

language = "Ingl{\'e}s",

volume = "133",

pages = "682--686",

journal = "Sensors and Actuators, B: Chemical",

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publisher = "Elsevier B.V.",

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TY - JOUR

T1 - Electrochemical and geometrical characterization of iridium oxide electrodes in stainless steel substrate

AU - Mayorga Martinez, Carmen C.

AU - Madrid, Rossana E.

AU - Felice, Carmelo J.

PY - 2008/8/12

Y1 - 2008/8/12

N2 - A geometrical and electrochemical characterization of stainless steel electrodes electrodeposited with iridium oxide (IrO2) is presented. There is a dramatic increase in the double layer capacitance (C) and an important decrease in the charge transfer resistance (Rct) after electrodeposition, causing also a significant two orders of magnitude reduction of the electrode-electrolyte interface impedance (EEIZ). These phenomena may be explained by the fine-grained iridium oxide, which has a high grain boundary density and which increases the actual electrodic area. An RC model is presented, which would explain the electrical behaviour of the system.

AB - A geometrical and electrochemical characterization of stainless steel electrodes electrodeposited with iridium oxide (IrO2) is presented. There is a dramatic increase in the double layer capacitance (C) and an important decrease in the charge transfer resistance (Rct) after electrodeposition, causing also a significant two orders of magnitude reduction of the electrode-electrolyte interface impedance (EEIZ). These phenomena may be explained by the fine-grained iridium oxide, which has a high grain boundary density and which increases the actual electrodic area. An RC model is presented, which would explain the electrical behaviour of the system.

KW - EIROF layers

KW - Electrode-electrolyte impedance

KW - Iridium oxide

KW - Randles model

UR - https://www.scopus.com/pages/publications/47649115797

U2 - 10.1016/j.snb.2008.03.037

DO - 10.1016/j.snb.2008.03.037

M3 - Artículo

AN - SCOPUS:47649115797

SN - 0925-4005

VL - 133

SP - 682

EP - 686

JO - Sensors and Actuators, B: Chemical

JF - Sensors and Actuators, B: Chemical

IS - 2

ER -

Electrochemical and geometrical characterization of iridium oxide electrodes in stainless steel substrate

Abstract

Keywords

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