Intermediate temperature solid oxide fuel cell using (La,Sr)(Co,Fe)O3-based cathodes

Wi Heon Kim; Hwa Seob Song; Jooho Moon; Hae Won Lee

doi:10.1016/j.ssi.2006.07.049

Intermediate temperature solid oxide fuel cell using (La,Sr)(Co,Fe)O₃-based cathodes

Wi Heon Kim, Hwa Seob Song, Jooho Moon, Hae Won Lee

Department of Materials Science and Engineering

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

96 Citations (Scopus)

Abstract

Anode-supported SOFCs involving LSCF (La_0.6Sr_0.4Co_0.2Fe_0.8O_3-δ)-based cathodes are fabricated utilizing GDC interlayer on 8YSZ electrolyte for intermediate temperatures. The GDC interlayer between the LSCF cathode and YSZ electrolyte is used to prevent formation of insulating phases such as SrZrO₃ or La₂Zr₂O₇. The cell performance with the GDC interlayer was ten times better than the one without GDC at operating temperature of 750 °C. However, the observed power density (370 mW/cm²) was lower than the value reported in the literature. This can be attributed to an imperfect GDC interlayer in the present study. The GDC interlayer was porous and non-uniform, so that adverse interfacial reactions could not be completely prevented. The chemical incompatibility at the interface was evaluated by SEM and EPMA, which explains the dependence of cell performance on sintering temperatures of the GDC interlayer.

Original language	English
Pages (from-to)	3211-3216
Number of pages	6
Journal	Solid State Ionics
Volume	177
Issue number	35-36
DOIs	https://doi.org/10.1016/j.ssi.2006.07.049
Publication status	Published - 2006 Nov 30

Bibliographical note

Funding Information:
This work was supported by the Core technology Development Program for Fuel Cell of Ministry of Science and Technology and Korea Institute of Science and Technology Evaluation and Planning. It was also partially supported by the National Research Laboratory (NRL) Program of Korea Science and Engineering Foundation.

All Science Journal Classification (ASJC) codes

Chemistry(all)
Materials Science(all)
Condensed Matter Physics

Access to Document

10.1016/j.ssi.2006.07.049

Cite this

@article{a4a960453efc4e2cb159aa59dd132dc7,

title = "Intermediate temperature solid oxide fuel cell using (La,Sr)(Co,Fe)O3-based cathodes",

abstract = "Anode-supported SOFCs involving LSCF (La0.6Sr0.4Co0.2Fe0.8O3-δ)-based cathodes are fabricated utilizing GDC interlayer on 8YSZ electrolyte for intermediate temperatures. The GDC interlayer between the LSCF cathode and YSZ electrolyte is used to prevent formation of insulating phases such as SrZrO3 or La2Zr2O7. The cell performance with the GDC interlayer was ten times better than the one without GDC at operating temperature of 750 °C. However, the observed power density (370 mW/cm2) was lower than the value reported in the literature. This can be attributed to an imperfect GDC interlayer in the present study. The GDC interlayer was porous and non-uniform, so that adverse interfacial reactions could not be completely prevented. The chemical incompatibility at the interface was evaluated by SEM and EPMA, which explains the dependence of cell performance on sintering temperatures of the GDC interlayer.",

author = "Kim, {Wi Heon} and Song, {Hwa Seob} and Jooho Moon and Lee, {Hae Won}",

note = "Funding Information: This work was supported by the Core technology Development Program for Fuel Cell of Ministry of Science and Technology and Korea Institute of Science and Technology Evaluation and Planning. It was also partially supported by the National Research Laboratory (NRL) Program of Korea Science and Engineering Foundation.",

year = "2006",

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doi = "10.1016/j.ssi.2006.07.049",

language = "English",

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AU - Kim, Wi Heon

AU - Song, Hwa Seob

AU - Moon, Jooho

AU - Lee, Hae Won

N1 - Funding Information: This work was supported by the Core technology Development Program for Fuel Cell of Ministry of Science and Technology and Korea Institute of Science and Technology Evaluation and Planning. It was also partially supported by the National Research Laboratory (NRL) Program of Korea Science and Engineering Foundation.

PY - 2006/11/30

Y1 - 2006/11/30

N2 - Anode-supported SOFCs involving LSCF (La0.6Sr0.4Co0.2Fe0.8O3-δ)-based cathodes are fabricated utilizing GDC interlayer on 8YSZ electrolyte for intermediate temperatures. The GDC interlayer between the LSCF cathode and YSZ electrolyte is used to prevent formation of insulating phases such as SrZrO3 or La2Zr2O7. The cell performance with the GDC interlayer was ten times better than the one without GDC at operating temperature of 750 °C. However, the observed power density (370 mW/cm2) was lower than the value reported in the literature. This can be attributed to an imperfect GDC interlayer in the present study. The GDC interlayer was porous and non-uniform, so that adverse interfacial reactions could not be completely prevented. The chemical incompatibility at the interface was evaluated by SEM and EPMA, which explains the dependence of cell performance on sintering temperatures of the GDC interlayer.

AB - Anode-supported SOFCs involving LSCF (La0.6Sr0.4Co0.2Fe0.8O3-δ)-based cathodes are fabricated utilizing GDC interlayer on 8YSZ electrolyte for intermediate temperatures. The GDC interlayer between the LSCF cathode and YSZ electrolyte is used to prevent formation of insulating phases such as SrZrO3 or La2Zr2O7. The cell performance with the GDC interlayer was ten times better than the one without GDC at operating temperature of 750 °C. However, the observed power density (370 mW/cm2) was lower than the value reported in the literature. This can be attributed to an imperfect GDC interlayer in the present study. The GDC interlayer was porous and non-uniform, so that adverse interfacial reactions could not be completely prevented. The chemical incompatibility at the interface was evaluated by SEM and EPMA, which explains the dependence of cell performance on sintering temperatures of the GDC interlayer.

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