EIS at carbon fiber cylindrical microelectrodes

The theoretical mass-transport impedance at cylindrical microelectrodes has been known for some time, but an experimental verification is given here for the first time, using carbon fiber electrodes taken from a commercial carbon felt. Nonlinear least-squares fitting of the impedance spectrum of a r...

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Main Authors:	Leatham Landon-Lane, Aaron T. Marshall, David A. Harrington
Format:	Article
Language:	English
Published:	Elsevier 2019-12-01
Series:	Electrochemistry Communications
Online Access:	http://www.sciencedirect.com/science/article/pii/S1388248119302292

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record_format	Article
spelling	doaj-ab46103259bd40b8a9733425c518db2a2020-11-25T00:26:47ZengElsevierElectrochemistry Communications1388-24812019-12-01109EIS at carbon fiber cylindrical microelectrodesLeatham Landon-Lane0Aaron T. Marshall1David A. Harrington2Department of Chemical and Process Engineering, University of Canterbury, Christchurch 8140, New ZealandDepartment of Chemical and Process Engineering, University of Canterbury, Christchurch 8140, New Zealand; Corresponding authors.Department of Chemistry, University of Victoria, Victoria, BC, V8W 2Y2, Canada; Corresponding authors.The theoretical mass-transport impedance at cylindrical microelectrodes has been known for some time, but an experimental verification is given here for the first time, using carbon fiber electrodes taken from a commercial carbon felt. Nonlinear least-squares fitting of the impedance spectrum of a redox couple at the reversible potential enables accurate evaluation of a composite parameter containing the standard rate constant and mean diffusivity, without measuring the fiber diameter, length or area. Keywords: Mass transport impedance, Cylindrical diffusion, Carbon fiber, Microelectrode, EIShttp://www.sciencedirect.com/science/article/pii/S1388248119302292
collection	DOAJ
language	English
format	Article
sources	DOAJ
author	Leatham Landon-Lane Aaron T. Marshall David A. Harrington
spellingShingle	Leatham Landon-Lane Aaron T. Marshall David A. Harrington EIS at carbon fiber cylindrical microelectrodes Electrochemistry Communications
author_facet	Leatham Landon-Lane Aaron T. Marshall David A. Harrington
author_sort	Leatham Landon-Lane
title	EIS at carbon fiber cylindrical microelectrodes
title_short	EIS at carbon fiber cylindrical microelectrodes
title_full	EIS at carbon fiber cylindrical microelectrodes
title_fullStr	EIS at carbon fiber cylindrical microelectrodes
title_full_unstemmed	EIS at carbon fiber cylindrical microelectrodes
title_sort	eis at carbon fiber cylindrical microelectrodes
publisher	Elsevier
series	Electrochemistry Communications
issn	1388-2481
publishDate	2019-12-01
description	The theoretical mass-transport impedance at cylindrical microelectrodes has been known for some time, but an experimental verification is given here for the first time, using carbon fiber electrodes taken from a commercial carbon felt. Nonlinear least-squares fitting of the impedance spectrum of a redox couple at the reversible potential enables accurate evaluation of a composite parameter containing the standard rate constant and mean diffusivity, without measuring the fiber diameter, length or area. Keywords: Mass transport impedance, Cylindrical diffusion, Carbon fiber, Microelectrode, EIS
url	http://www.sciencedirect.com/science/article/pii/S1388248119302292
work_keys_str_mv	AT leathamlandonlane eisatcarbonfibercylindricalmicroelectrodes AT aarontmarshall eisatcarbonfibercylindricalmicroelectrodes AT davidaharrington eisatcarbonfibercylindricalmicroelectrodes
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EIS at carbon fiber cylindrical microelectrodes

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