Electrochemical impedance spectroscopy investigation of the anodic functionalities and processes in LSCM-CGO-Ni systems

Samir Boulfrad; A. Nechache; Mark Cassidy; E. Traversa; John Thomas Sirr Irvine

doi:10.1149/06801.2011ecst

Electrochemical impedance spectroscopy investigation of the anodic functionalities and processes in LSCM-CGO-Ni systems

Samir Boulfrad, A. Nechache, Mark Cassidy, E. Traversa, John Thomas Sirr Irvine

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

6 Citations (Scopus)

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Abstract

Electrochemical impedance spectroscopy was used to characterize anode compositions made of (La0_.75Sr0_.25)_0.97Cr_0.5Mn_0.5O₃ (LSCM) and gadolinia doped ceria (CGO) with and without additional submicron Ni, or exsoluted Ni nanoparticles. In addition, the effects of the anode gas flow rate and the working temperature were investigated. Higher content of the ionic conductor leads to a decrease of the impedance in the frequency range from 100 Hz to 10 Hz. The effect of the catalyst component was investigated while keeping the electronic conductivity unchanged in the tested materials. Enhanced catalytic activity was demonstrated to considerably decrease the impedance especially in the frequency range between 100 Hz to 1 Hz. The change in the gas flow rate affects mainly the impedance bellow 1 Hz.

Original language	English
Title of host publication	14th International Symposium on Solid Oxide Fuel Cells, SOFC 2015
Editors	K. Eguchi, S. C. Singhal
Publisher	Electrochemical Society
Pages	2011-2018
Number of pages	8
ISBN (Print)	9781607685395
DOIs	https://doi.org/10.1149/06801.2011ecst
Publication status	Published - 2015

Publication series

Name	ECS Transactions
Publisher	Electrochemical Society
Number	1
Volume	68
ISSN (Print)	1938-5862

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10.1149/06801.2011ecst

Irvine_2015_ECS_Electrochemical
© The Electrochemical Society, Inc. 2015. All rights reserved. Except as provided under U.S. copyright law, this work may not be reproduced, resold, distributed, or modified without the express permission of The Electrochemical Society (ECS). The archival version of this work was published here: https://dx.doi.org/10.1149/06801.2011ecst
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Boulfrad, S., Nechache, A., Cassidy, M., Traversa, E., & Irvine, J. T. S. (2015). Electrochemical impedance spectroscopy investigation of the anodic functionalities and processes in LSCM-CGO-Ni systems. In K. Eguchi, & S. C. Singhal (Eds.), 14th International Symposium on Solid Oxide Fuel Cells, SOFC 2015 (pp. 2011-2018). (ECS Transactions; Vol. 68, No. 1). Electrochemical Society. https://doi.org/10.1149/06801.2011ecst

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title = "Electrochemical impedance spectroscopy investigation of the anodic functionalities and processes in LSCM-CGO-Ni systems",

abstract = "Electrochemical impedance spectroscopy was used to characterize anode compositions made of (La0.75Sr0.25)0.97Cr0.5Mn0.5O3 (LSCM) and gadolinia doped ceria (CGO) with and without additional submicron Ni, or exsoluted Ni nanoparticles. In addition, the effects of the anode gas flow rate and the working temperature were investigated. Higher content of the ionic conductor leads to a decrease of the impedance in the frequency range from 100 Hz to 10 Hz. The effect of the catalyst component was investigated while keeping the electronic conductivity unchanged in the tested materials. Enhanced catalytic activity was demonstrated to considerably decrease the impedance especially in the frequency range between 100 Hz to 1 Hz. The change in the gas flow rate affects mainly the impedance bellow 1 Hz.",

author = "Samir Boulfrad and A. Nechache and Mark Cassidy and E. Traversa and Irvine, {John Thomas Sirr}",

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Boulfrad, S, Nechache, A, Cassidy, M, Traversa, E & Irvine, JTS 2015, Electrochemical impedance spectroscopy investigation of the anodic functionalities and processes in LSCM-CGO-Ni systems. in K Eguchi & SC Singhal (eds), 14th International Symposium on Solid Oxide Fuel Cells, SOFC 2015. ECS Transactions, no. 1, vol. 68, Electrochemical Society, pp. 2011-2018. https://doi.org/10.1149/06801.2011ecst

Electrochemical impedance spectroscopy investigation of the anodic functionalities and processes in LSCM-CGO-Ni systems. / Boulfrad, Samir; Nechache, A.; Cassidy, Mark et al.
14th International Symposium on Solid Oxide Fuel Cells, SOFC 2015. ed. / K. Eguchi; S. C. Singhal. Electrochemical Society, 2015. p. 2011-2018 (ECS Transactions; Vol. 68, No. 1).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

TY - GEN

T1 - Electrochemical impedance spectroscopy investigation of the anodic functionalities and processes in LSCM-CGO-Ni systems

AU - Boulfrad, Samir

AU - Nechache, A.

AU - Cassidy, Mark

AU - Traversa, E.

AU - Irvine, John Thomas Sirr

PY - 2015

Y1 - 2015

N2 - Electrochemical impedance spectroscopy was used to characterize anode compositions made of (La0.75Sr0.25)0.97Cr0.5Mn0.5O3 (LSCM) and gadolinia doped ceria (CGO) with and without additional submicron Ni, or exsoluted Ni nanoparticles. In addition, the effects of the anode gas flow rate and the working temperature were investigated. Higher content of the ionic conductor leads to a decrease of the impedance in the frequency range from 100 Hz to 10 Hz. The effect of the catalyst component was investigated while keeping the electronic conductivity unchanged in the tested materials. Enhanced catalytic activity was demonstrated to considerably decrease the impedance especially in the frequency range between 100 Hz to 1 Hz. The change in the gas flow rate affects mainly the impedance bellow 1 Hz.

AB - Electrochemical impedance spectroscopy was used to characterize anode compositions made of (La0.75Sr0.25)0.97Cr0.5Mn0.5O3 (LSCM) and gadolinia doped ceria (CGO) with and without additional submicron Ni, or exsoluted Ni nanoparticles. In addition, the effects of the anode gas flow rate and the working temperature were investigated. Higher content of the ionic conductor leads to a decrease of the impedance in the frequency range from 100 Hz to 10 Hz. The effect of the catalyst component was investigated while keeping the electronic conductivity unchanged in the tested materials. Enhanced catalytic activity was demonstrated to considerably decrease the impedance especially in the frequency range between 100 Hz to 1 Hz. The change in the gas flow rate affects mainly the impedance bellow 1 Hz.

U2 - 10.1149/06801.2011ecst

DO - 10.1149/06801.2011ecst

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AN - SCOPUS:84938801162

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BT - 14th International Symposium on Solid Oxide Fuel Cells, SOFC 2015

A2 - Eguchi, K.

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PB - Electrochemical Society

ER -

Boulfrad S, Nechache A, Cassidy M, Traversa E, Irvine JTS. Electrochemical impedance spectroscopy investigation of the anodic functionalities and processes in LSCM-CGO-Ni systems. In Eguchi K, Singhal SC, editors, 14th International Symposium on Solid Oxide Fuel Cells, SOFC 2015. Electrochemical Society. 2015. p. 2011-2018. (ECS Transactions; 1). doi: 10.1149/06801.2011ecst

Electrochemical impedance spectroscopy investigation of the anodic functionalities and processes in LSCM-CGO-Ni systems

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