Characterization of electrical properties of GDC doped A-site deficient LSCF based composite cathode using impedance spectroscopy

Fu Qiang; Ke Ning Sun; Nai Qing Zhang; Xiao Dong Zhu; Shi Ru Le; De Rui Zhou

doi:10.1016/j.jpowsour.2007.03.040

Characterization of electrical properties of GDC doped A-site deficient LSCF based composite cathode using impedance spectroscopy

Fu Qiang, Ke Ning Sun^*, Nai Qing Zhang, Xiao Dong Zhu, Shi Ru Le, De Rui Zhou

^*Corresponding author for this work

Harbin Institute of Technology

Research output: Contribution to journal › Article › peer-review

143 Citations (Scopus)

Abstract

The composite cathode consisting of A-site deficient perosvkite material La_0.58Sr_0.4Co_0.2Fe_0.8O_3-δ (L58SCF) and Ce_0.8Gd_0.2O_2-δ (GDC) on YSZ electrolyte is studied for potential applications in intermediate/low-temperature solid oxide fuel cells (SOFCs). Impedance spectroscopy measurements are performed in air over the temperature range of 600-800 °C under open circuit potential. The results show that the addition of 40 wt.% GDC to L58SCF (L58SCF-GDC40) results in the lower polarization resistance (0.07 Ω cm² at 800 °C, 0.11 Ω cm² at 750 °C and 0.22 Ω cm² at 700 °C) than other composite cathodes and its activation energy values calculated for the low- and high-frequency arcs are 0.86 and 1.10 eV, respectively. The composite cathode exhibit high exchange current density and low charge-transfer resistance.

Original language	English
Pages (from-to)	338-345
Number of pages	8
Journal	Journal of Power Sources
Volume	168
Issue number	2
DOIs	https://doi.org/10.1016/j.jpowsour.2007.03.040
Publication status	Published - 1 Jun 2007
Externally published	Yes

Keywords

Composite cathode
Impedance
Perosvkite
Polarization
SOFC

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.jpowsour.2007.03.040

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title = "Characterization of electrical properties of GDC doped A-site deficient LSCF based composite cathode using impedance spectroscopy",

abstract = "The composite cathode consisting of A-site deficient perosvkite material La0.58Sr0.4Co0.2Fe0.8O3-δ (L58SCF) and Ce0.8Gd0.2O2-δ (GDC) on YSZ electrolyte is studied for potential applications in intermediate/low-temperature solid oxide fuel cells (SOFCs). Impedance spectroscopy measurements are performed in air over the temperature range of 600-800 °C under open circuit potential. The results show that the addition of 40 wt.% GDC to L58SCF (L58SCF-GDC40) results in the lower polarization resistance (0.07 Ω cm2 at 800 °C, 0.11 Ω cm2 at 750 °C and 0.22 Ω cm2 at 700 °C) than other composite cathodes and its activation energy values calculated for the low- and high-frequency arcs are 0.86 and 1.10 eV, respectively. The composite cathode exhibit high exchange current density and low charge-transfer resistance.",

keywords = "Composite cathode, Impedance, Perosvkite, Polarization, SOFC",

author = "Fu Qiang and Sun, {Ke Ning} and Zhang, {Nai Qing} and Zhu, {Xiao Dong} and Le, {Shi Ru} and Zhou, {De Rui}",

year = "2007",

month = jun,

day = "1",

doi = "10.1016/j.jpowsour.2007.03.040",

language = "English",

volume = "168",

pages = "338--345",

journal = "Journal of Power Sources",

issn = "0378-7753",

publisher = "Elsevier B.V.",

number = "2",

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TY - JOUR

T1 - Characterization of electrical properties of GDC doped A-site deficient LSCF based composite cathode using impedance spectroscopy

AU - Qiang, Fu

AU - Sun, Ke Ning

AU - Zhang, Nai Qing

AU - Zhu, Xiao Dong

AU - Le, Shi Ru

AU - Zhou, De Rui

PY - 2007/6/1

Y1 - 2007/6/1

N2 - The composite cathode consisting of A-site deficient perosvkite material La0.58Sr0.4Co0.2Fe0.8O3-δ (L58SCF) and Ce0.8Gd0.2O2-δ (GDC) on YSZ electrolyte is studied for potential applications in intermediate/low-temperature solid oxide fuel cells (SOFCs). Impedance spectroscopy measurements are performed in air over the temperature range of 600-800 °C under open circuit potential. The results show that the addition of 40 wt.% GDC to L58SCF (L58SCF-GDC40) results in the lower polarization resistance (0.07 Ω cm2 at 800 °C, 0.11 Ω cm2 at 750 °C and 0.22 Ω cm2 at 700 °C) than other composite cathodes and its activation energy values calculated for the low- and high-frequency arcs are 0.86 and 1.10 eV, respectively. The composite cathode exhibit high exchange current density and low charge-transfer resistance.

AB - The composite cathode consisting of A-site deficient perosvkite material La0.58Sr0.4Co0.2Fe0.8O3-δ (L58SCF) and Ce0.8Gd0.2O2-δ (GDC) on YSZ electrolyte is studied for potential applications in intermediate/low-temperature solid oxide fuel cells (SOFCs). Impedance spectroscopy measurements are performed in air over the temperature range of 600-800 °C under open circuit potential. The results show that the addition of 40 wt.% GDC to L58SCF (L58SCF-GDC40) results in the lower polarization resistance (0.07 Ω cm2 at 800 °C, 0.11 Ω cm2 at 750 °C and 0.22 Ω cm2 at 700 °C) than other composite cathodes and its activation energy values calculated for the low- and high-frequency arcs are 0.86 and 1.10 eV, respectively. The composite cathode exhibit high exchange current density and low charge-transfer resistance.

KW - Composite cathode

KW - Impedance

KW - Perosvkite

KW - Polarization

KW - SOFC

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U2 - 10.1016/j.jpowsour.2007.03.040

DO - 10.1016/j.jpowsour.2007.03.040

M3 - Article

AN - SCOPUS:34247585540

SN - 0378-7753

VL - 168

SP - 338

EP - 345

JO - Journal of Power Sources

JF - Journal of Power Sources

IS - 2

ER -

Characterization of electrical properties of GDC doped A-site deficient LSCF based composite cathode using impedance spectroscopy

Abstract

Keywords

UN SDGs

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