Impedance Studies on LSCM/GDC Cathode for High Temperature CO2 Electrolysis

Xiangling Yue; John T. S. Irvine

doi:10.1149/2.021203esl

Impedance Studies on LSCM/GDC Cathode for High Temperature CO2 Electrolysis

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Abstract

The cathode performance of LSCM/GDC composite for high temperature CO2 electrolysis has been studied by electrochemical impedance spectroscopy (EIS) measurements in a three-electrode electrolysis cell using Pt paste as current collector. Themain feature of LSCM/GDC cathode is that it showed a Gerischer like impedance dispersion at 900 degrees C in all CO2-CO mixtures investigated here. With increasing CO concentration and operating potential, the Rs changes little whilst, the Rp declines markedly for LSCM/GDC composite cathode. The surface adsorption/desorption equilibration and/or surface diffusion processes play a dominant role in the electrochemical reduction of CO2 by SOEC. (C) 2012 The Electrochemical Society. [DOI: 10.1149/2.021203esl] All rights reserved.

Original language	English
Pages (from-to)	B31-B34
Number of pages	4
Journal	Electrochemical and Solid-State Letters
Volume	15
Issue number	3
DOIs	https://doi.org/10.1149/2.021203esl
Publication status	Published - 2012
Event	220th ECS Meeting & Electrochemical Energy Summit, Boston, USA - Boston, United States Duration: 9 Oct 2011 → 14 Oct 2011 Conference number: 220th ECS Meeting

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10.1149/2.021203esl

Material for high Temp FCT EP/E064248/1: Materials for High Temperature Fuel Cell Technology
Irvine, J. T. S. (PI), Cassidy, M. (CoI), Connor, P. A. (CoI), Savaniu, C. D. (CoI) & Tao, S. (CoI)
EPSRC
1/01/08 → 31/12/12
Project: Standard

Cite this

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title = "Impedance Studies on LSCM/GDC Cathode for High Temperature CO2 Electrolysis",

abstract = "The cathode performance of LSCM/GDC composite for high temperature CO2 electrolysis has been studied by electrochemical impedance spectroscopy (EIS) measurements in a three-electrode electrolysis cell using Pt paste as current collector. Themain feature of LSCM/GDC cathode is that it showed a Gerischer like impedance dispersion at 900 degrees C in all CO2-CO mixtures investigated here. With increasing CO concentration and operating potential, the Rs changes little whilst, the Rp declines markedly for LSCM/GDC composite cathode. The surface adsorption/desorption equilibration and/or surface diffusion processes play a dominant role in the electrochemical reduction of CO2 by SOEC. (C) 2012 The Electrochemical Society. [DOI: 10.1149/2.021203esl] All rights reserved.",

author = "Xiangling Yue and Irvine, {John T. S.}",

year = "2012",

doi = "10.1149/2.021203esl",

language = "English",

volume = "15",

pages = "B31--B34",

journal = "Electrochemical and Solid-State Letters",

issn = "1099-0062",

publisher = "Electrochemical Society, Inc.",

number = "3",

note = "220th ECS Meeting & Electrochemical Energy Summit, Boston, USA ; Conference date: 09-10-2011 Through 14-10-2011",

}

TY - JOUR

T1 - Impedance Studies on LSCM/GDC Cathode for High Temperature CO2 Electrolysis

AU - Yue, Xiangling

AU - Irvine, John T. S.

N1 - Conference code: 220th ECS Meeting

PY - 2012

Y1 - 2012

N2 - The cathode performance of LSCM/GDC composite for high temperature CO2 electrolysis has been studied by electrochemical impedance spectroscopy (EIS) measurements in a three-electrode electrolysis cell using Pt paste as current collector. Themain feature of LSCM/GDC cathode is that it showed a Gerischer like impedance dispersion at 900 degrees C in all CO2-CO mixtures investigated here. With increasing CO concentration and operating potential, the Rs changes little whilst, the Rp declines markedly for LSCM/GDC composite cathode. The surface adsorption/desorption equilibration and/or surface diffusion processes play a dominant role in the electrochemical reduction of CO2 by SOEC. (C) 2012 The Electrochemical Society. [DOI: 10.1149/2.021203esl] All rights reserved.

AB - The cathode performance of LSCM/GDC composite for high temperature CO2 electrolysis has been studied by electrochemical impedance spectroscopy (EIS) measurements in a three-electrode electrolysis cell using Pt paste as current collector. Themain feature of LSCM/GDC cathode is that it showed a Gerischer like impedance dispersion at 900 degrees C in all CO2-CO mixtures investigated here. With increasing CO concentration and operating potential, the Rs changes little whilst, the Rp declines markedly for LSCM/GDC composite cathode. The surface adsorption/desorption equilibration and/or surface diffusion processes play a dominant role in the electrochemical reduction of CO2 by SOEC. (C) 2012 The Electrochemical Society. [DOI: 10.1149/2.021203esl] All rights reserved.

U2 - 10.1149/2.021203esl

DO - 10.1149/2.021203esl

M3 - Article

SN - 1099-0062

VL - 15

SP - B31-B34

JO - Electrochemical and Solid-State Letters

JF - Electrochemical and Solid-State Letters

IS - 3

T2 - 220th ECS Meeting & Electrochemical Energy Summit, Boston, USA

Y2 - 9 October 2011 through 14 October 2011

ER -

Impedance Studies on LSCM/GDC Cathode for High Temperature CO2 Electrolysis

Abstract

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Material for high Temp FCT EP/E064248/1: Materials for High Temperature Fuel Cell Technology

Cite this