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Local electrochemical impedance spectroscopy: A review and some recent developments

Huang, Vicky Mei-Wen and Wu, Shao-Ling and Orazem, Mark E. and Pébère, Nadine and Tribollet, Bernard and Vivier, Vincent Local electrochemical impedance spectroscopy: A review and some recent developments. (2011) Electrochimica Acta, vol. 56 (n° 23). pp. 8048-8057. ISSN 0013-4686

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Official URL: http://dx.doi.org/10.1016/j.electacta.2011.03.018

Abstract

Local electrochemical impedance spectroscopy (LEIS), which provides a powerful tool for exploration of electrode heterogeneity, has its roots in the development of electrochemical techniques employing scanning of microelectrodes. The historical development of local impedance spectroscopy measurements is reviewed, and guidelines are presented for implementation of LEIS. The factors which control the limiting spatial resolution of the technique are identified. The mathematical foundation for the technique is reviewed, including definitions of interfacial and local Ohmic impedances on both local and global scales. Experimental results for the reduction of ferricyanide show the correspondence between local and global impedances. Simulations for a single Faradaic reaction on a disk electrode embedded in an insulator are used to show that the Ohmic contribution, traditionally considered to be a real value, can have complex character in certain frequency ranges.

Item Type:Article
Additional Information:Thanks to Elsevier editor. The definitive version is available at http://www.sciencedirect.com The original PDF of the article can be found at Electrochimica Acta website: http://www.sciencedirect.com/science/article/pii/S0013468611003793
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT
Other partners > Université Pierre et Marie Curie, Paris 6 - UPMC (FRANCE)
Université de Toulouse > Université Paul Sabatier-Toulouse III - UPS
Other partners > University of Florida (USA)
Laboratory name:
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Deposited By: Denis Faragou
Deposited On:06 Jun 2012 19:47

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