Electrochemical properties of composite cathodes using Sm doped layered perovskite for intermediate temperature-operating solid oxide fuel cell

Seung-Wook Baek; Abul K. Azad; John T. S. Irvine; Won Seok Choi; Hyunil Kang; Jung Hyun Kim

doi:10.1016/j.apsusc.2017.02.211

Electrochemical properties of composite cathodes using Sm doped layered perovskite for intermediate temperature-operating solid oxide fuel cell

Seung-Wook Baek, Abul K. Azad, John T. S. Irvine, Won Seok Choi, Hyunil Kang, Jung Hyun Kim

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

Abstract

SmBaCo₂O_5+d (SBCO) showed the lowest observed Area Specific Resistance (ASR) value in the LnBaCo₂O_5+d (Ln: Pr, Nd, Sm, and Gd) oxide system for the overall temperature ranges tested. The ASR of a composite cathode (mixture of SBCO and Ce_0.9Gd_0.1O_2−d) on a Ce_0.9Gd_0.1O_2−d(CGO91) electrolyte decreased with respect to the CGO91 content; the percolation limit was also achieved for a 50 wt% SBCO and 50 wt% CGO91 (SBCO50) composite cathode.
The ASRs of SBCO50 on the dense CGO91 electrolyte in the overall temperature range of 500 to 750 °C were relatively lower than those of SBCO50 on the CGO91 coated dense 8 mol % yttria-stabilized zirconia (8YSZ) electrolyte for the same temperature range. From 750 °C and for all higher temperatures tested, however, the ASRs of SBCO50 on the CGO91 coated dense 8YSZ electrolyte were lower than those of the CGO91 electrolyte.
The maximum power densities of SBCO50 on the Ni-8YSZ/8YSZ/CGO91 buffer layer were 1.034 W cm⁻² and 0.611 W cm⁻² at 800 °C and 700 °C.

Original language	English
Pages (from-to)	272-277
Journal	Applied Surface Science
Volume	432
Issue number	B
Early online date	24 Feb 2017
DOIs	https://doi.org/10.1016/j.apsusc.2017.02.211
Publication status	Published - 28 Feb 2018

Keywords

Intermediate temperature-operating solid oxide fuel cell
Layered peorvksite
Area specific resistance
Percolation
Composite cathode

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10.1016/j.apsusc.2017.02.211

Irvine_2017_ASS_CompositeCathodes_AAM
© 2017 Elsevier Ltd. All rights reserved. This work has been made available online in accordance with the publisher’s policies. This is the author created, accepted version manuscript following peer review and may differ slightly from the final published version. The final published version of this work is available at https://doi.org/10.1016/j.apsusc.2017.02.211
Accepted author manuscript, 559 KBLicence: CC BY-NC-ND

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@article{14098e13675a4922975a193aae442e83,

title = "Electrochemical properties of composite cathodes using Sm doped layered perovskite for intermediate temperature-operating solid oxide fuel cell",

abstract = "SmBaCo2O5+d (SBCO) showed the lowest observed Area Specific Resistance (ASR) value in the LnBaCo2O5+d (Ln: Pr, Nd, Sm, and Gd) oxide system for the overall temperature ranges tested. The ASR of a composite cathode (mixture of SBCO and Ce0.9Gd0.1O2−d) on a Ce0.9Gd0.1O2−d (CGO91) electrolyte decreased with respect to the CGO91 content; the percolation limit was also achieved for a 50 wt% SBCO and 50 wt% CGO91 (SBCO50) composite cathode.The ASRs of SBCO50 on the dense CGO91 electrolyte in the overall temperature range of 500 to 750 °C were relatively lower than those of SBCO50 on the CGO91 coated dense 8 mol % yttria-stabilized zirconia (8YSZ) electrolyte for the same temperature range. From 750 °C and for all higher temperatures tested, however, the ASRs of SBCO50 on the CGO91 coated dense 8YSZ electrolyte were lower than those of the CGO91 electrolyte.The maximum power densities of SBCO50 on the Ni-8YSZ/8YSZ/CGO91 buffer layer were 1.034 W cm−2 and 0.611 W cm−2 at 800 °C and 700 °C.",

keywords = "Intermediate temperature-operating solid oxide fuel cell, Layered peorvksite, Area specific resistance, Percolation, Composite cathode",

author = "Seung-Wook Baek and Azad, {Abul K.} and Irvine, {John T. S.} and Choi, {Won Seok} and Hyunil Kang and Kim, {Jung Hyun}",

note = "The authors are grateful for the support of the Basic Science Research Program, part of the National Research Foundation of Korea (NRF), funded by the Ministry of Science, ICT and Future Planning (No. 2014R1A1A1004163).",

year = "2018",

month = feb,

day = "28",

doi = "10.1016/j.apsusc.2017.02.211",

language = "English",

volume = "432",

pages = "272--277",

journal = "Applied Surface Science",

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publisher = "Elsevier Science B.V.",

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TY - JOUR

T1 - Electrochemical properties of composite cathodes using Sm doped layered perovskite for intermediate temperature-operating solid oxide fuel cell

AU - Baek, Seung-Wook

AU - Azad, Abul K.

AU - Irvine, John T. S.

AU - Choi, Won Seok

AU - Kang, Hyunil

AU - Kim, Jung Hyun

N1 - The authors are grateful for the support of the Basic Science Research Program, part of the National Research Foundation of Korea (NRF), funded by the Ministry of Science, ICT and Future Planning (No. 2014R1A1A1004163).

PY - 2018/2/28

Y1 - 2018/2/28

N2 - SmBaCo2O5+d (SBCO) showed the lowest observed Area Specific Resistance (ASR) value in the LnBaCo2O5+d (Ln: Pr, Nd, Sm, and Gd) oxide system for the overall temperature ranges tested. The ASR of a composite cathode (mixture of SBCO and Ce0.9Gd0.1O2−d) on a Ce0.9Gd0.1O2−d (CGO91) electrolyte decreased with respect to the CGO91 content; the percolation limit was also achieved for a 50 wt% SBCO and 50 wt% CGO91 (SBCO50) composite cathode.The ASRs of SBCO50 on the dense CGO91 electrolyte in the overall temperature range of 500 to 750 °C were relatively lower than those of SBCO50 on the CGO91 coated dense 8 mol % yttria-stabilized zirconia (8YSZ) electrolyte for the same temperature range. From 750 °C and for all higher temperatures tested, however, the ASRs of SBCO50 on the CGO91 coated dense 8YSZ electrolyte were lower than those of the CGO91 electrolyte.The maximum power densities of SBCO50 on the Ni-8YSZ/8YSZ/CGO91 buffer layer were 1.034 W cm−2 and 0.611 W cm−2 at 800 °C and 700 °C.

AB - SmBaCo2O5+d (SBCO) showed the lowest observed Area Specific Resistance (ASR) value in the LnBaCo2O5+d (Ln: Pr, Nd, Sm, and Gd) oxide system for the overall temperature ranges tested. The ASR of a composite cathode (mixture of SBCO and Ce0.9Gd0.1O2−d) on a Ce0.9Gd0.1O2−d (CGO91) electrolyte decreased with respect to the CGO91 content; the percolation limit was also achieved for a 50 wt% SBCO and 50 wt% CGO91 (SBCO50) composite cathode.The ASRs of SBCO50 on the dense CGO91 electrolyte in the overall temperature range of 500 to 750 °C were relatively lower than those of SBCO50 on the CGO91 coated dense 8 mol % yttria-stabilized zirconia (8YSZ) electrolyte for the same temperature range. From 750 °C and for all higher temperatures tested, however, the ASRs of SBCO50 on the CGO91 coated dense 8YSZ electrolyte were lower than those of the CGO91 electrolyte.The maximum power densities of SBCO50 on the Ni-8YSZ/8YSZ/CGO91 buffer layer were 1.034 W cm−2 and 0.611 W cm−2 at 800 °C and 700 °C.

KW - Intermediate temperature-operating solid oxide fuel cell

KW - Layered peorvksite

KW - Area specific resistance

KW - Percolation

KW - Composite cathode

U2 - 10.1016/j.apsusc.2017.02.211

DO - 10.1016/j.apsusc.2017.02.211

M3 - Article

SN - 0169-4332

VL - 432

SP - 272

EP - 277

JO - Applied Surface Science

JF - Applied Surface Science

IS - B

ER -

Electrochemical properties of composite cathodes using Sm doped layered perovskite for intermediate temperature-operating solid oxide fuel cell

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