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    Impedance spectroscopy: Over 35 years of electrochemical sensor optimization

    Access Status
    Fulltext not available
    Authors
    Pejcic, Bobby
    De Marco, Roland
    Date
    2006
    Type
    Journal Article
    
    Metadata
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    Citation
    Pejcic, Bobby and De Marco, Roland. 2006. Impedance spectroscopy: Over 35 years of electrochemical sensor optimization. Electrochimica Acta. 51 (28): 6217-6229.
    Source Title
    Electrochimica Acta
    DOI
    10.1016/j.electacta.2006.04.025
    Faculty
    Department of Applied Chemistry
    Division of Engineering, Science and Computing
    Faculty of Science
    Remarks

    Pejcic, Bobby and De Marco, Roland (2006) Impedance spectroscopy: Over 35 years of electrochemical sensor optimization, Electrochimica Acta 51:6217-6229.

    URI
    http://hdl.handle.net/20.500.11937/30762
    Collection
    • Curtin Research Publications
    Abstract

    There is considerable interest in the development of electroanalytical sensors (i.e., potentiometric, amperometric, electrochemical biosensors) for the detection of a wide range of analytes. The success of many of these sensors is governed by the condition and stability of the membrane/electrode surface. In fact, the response mechanism is dictated primarily by the surface structure and a considerable amount of work has been undertaken to characterize the interfacial region. Consequently, electrochemical impedance spectroscopy (EIS) has played a pivotal role in the characterization of many types of sensors. EIS has been used to provide information on various fundamental processes (i.e., adsorption/film formation, rate of charge transfer, ion exchange, diffusion, etc.) that occur at the electrode electrolyte interface. Understanding and manipulating these interfacial processes has assisted in the development of membranes/electrodes with new and improved response characteristics. This paper reviews some of the work that has been undertaken using EIS over the past 35 years. More importantly, it evaluates the power of EIS in characterizing a wide range of electrochemical sensor systems.

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