Study of electrode performance for nanosized La0.4Sr0.6Co0.8Fe0.2O3-δIT-SOFC cathode

L. V. Mogni; K. Yakal-Kremski; C. M. Chanquía; Z. Gao; H. Wang; A. Caneiro; Scott A Barnett

doi:10.1149/06602.0169ecst

Study of electrode performance for nanosized La_0.4Sr_0.6Co_0.8Fe_0.2O_3-δIT-SOFC cathode

L. V. Mogni, K. Yakal-Kremski, C. M. Chanquía, Z. Gao, H. Wang, A. Caneiro, Scott A Barnett

Materials Science and Engineering

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

5 Scopus citations

Abstract

La_0.4Sr_0.6Co_0.8Fe_0.2O_3-δ (LSCF4682) perovskite was successfully synthesized by an assisted ammonium nitrate combustion method. The sample shows a sponge-like structure with meso and macropores distributed between interconnected nanosized crystallites (45 nm) with a specific surface area around 8 m²g^-1. Cathode performance of LSCF4682 was investigated in the intermediate temperature range between 400 °C-700 °C by using symmetrical cell configuration on La_0.8Sr_0.2Ga_0.8Mg_0.2O_3-δ (LSGM) electrolyte. The cathode polarization resistances Rc,p are 0.067 and 0.035 O.cm2 at 600 °C and 700 °C, respectively. The long-term behavior of Rc,p was studied by applying an accelerate aging at 800 °C and testing the polarization resistance at 700 °C as a function of time. After 500 h of aging, a degradation rate of 1/Rc,P dRc,P/dt = 0.002 h-1raises the Rc,p to 0.1 O.cm2 at 700 °C. A maximum power density of 1.23 Wcm-2 was achieved at 650 °C testing the LSCF cathode deposited on a porous SLT-LSGM supported multilayer cell. These results demonstrate that this material is a competitive SOFC cathode for the intermediate temperature operation.

Original language	English (US)
Title of host publication	Solid-Gas Electrochemical Interfaces � SGEI 1
Editors	E. Ivers-Tiffee, M. B. Mogensen, S. B. Adler, T. Kawada
Publisher	Electrochemical Society Inc.
Pages	169-176
Number of pages	8
Edition	2
ISBN (Electronic)	9781607685395
DOIs	https://doi.org/10.1149/06602.0169ecst
State	Published - Jan 1 2015
Event	1st Symposium on Solid-Gas Electrochemical Interfaces, SGEI 2015 - 227th ECS Meeting - Chicago, United States Duration: May 24 2015 → May 28 2015

Publication series

Name	ECS Transactions
Number	2
Volume	66
ISSN (Print)	1938-5862
ISSN (Electronic)	1938-6737

Other

Other	1st Symposium on Solid-Gas Electrochemical Interfaces, SGEI 2015 - 227th ECS Meeting
Country/Territory	United States
City	Chicago
Period	5/24/15 → 5/28/15

ASJC Scopus subject areas

General Engineering

Access to Document

10.1149/06602.0169ecst

Cite this

Mogni, L. V., Yakal-Kremski, K., Chanquía, C. M., Gao, Z., Wang, H., Caneiro, A., & Barnett, S. A. (2015). Study of electrode performance for nanosized La_0.4Sr_0.6Co_0.8Fe_0.2O_3-δIT-SOFC cathode. In E. Ivers-Tiffee, M. B. Mogensen, S. B. Adler, & T. Kawada (Eds.), Solid-Gas Electrochemical Interfaces � SGEI 1 (2 ed., pp. 169-176). (ECS Transactions; Vol. 66, No. 2). Electrochemical Society Inc.. https://doi.org/10.1149/06602.0169ecst

@inproceedings{a39ed3a252fa4e8c98b66697c7fea3dc,

title = "Study of electrode performance for nanosized La0.4Sr0.6Co0.8Fe0.2O3-δIT-SOFC cathode",

abstract = "La0.4Sr0.6Co0.8Fe0.2O3-δ (LSCF4682) perovskite was successfully synthesized by an assisted ammonium nitrate combustion method. The sample shows a sponge-like structure with meso and macropores distributed between interconnected nanosized crystallites (45 nm) with a specific surface area around 8 m2g-1. Cathode performance of LSCF4682 was investigated in the intermediate temperature range between 400 °C-700 °C by using symmetrical cell configuration on La0.8Sr0.2Ga0.8Mg0.2O3-δ (LSGM) electrolyte. The cathode polarization resistances Rc,p are 0.067 and 0.035 O.cm2 at 600 °C and 700 °C, respectively. The long-term behavior of Rc,p was studied by applying an accelerate aging at 800 °C and testing the polarization resistance at 700 °C as a function of time. After 500 h of aging, a degradation rate of 1/Rc,P dRc,P/dt = 0.002 h-1raises the Rc,p to 0.1 O.cm2 at 700 °C. A maximum power density of 1.23 Wcm-2 was achieved at 650 °C testing the LSCF cathode deposited on a porous SLT-LSGM supported multilayer cell. These results demonstrate that this material is a competitive SOFC cathode for the intermediate temperature operation.",

author = "Mogni, {L. V.} and K. Yakal-Kremski and Chanqu{\'i}a, {C. M.} and Z. Gao and H. Wang and A. Caneiro and Barnett, {Scott A}",

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doi = "10.1149/06602.0169ecst",

language = "English (US)",

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editor = "E. Ivers-Tiffee and Mogensen, {M. B.} and Adler, {S. B.} and T. Kawada",

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Mogni, LV, Yakal-Kremski, K, Chanquía, CM, Gao, Z, Wang, H, Caneiro, A & Barnett, SA 2015, Study of electrode performance for nanosized La_0.4Sr_0.6Co_0.8Fe_0.2O_3-δIT-SOFC cathode. in E Ivers-Tiffee, MB Mogensen, SB Adler & T Kawada (eds), Solid-Gas Electrochemical Interfaces � SGEI 1. 2 edn, ECS Transactions, no. 2, vol. 66, Electrochemical Society Inc., pp. 169-176, 1st Symposium on Solid-Gas Electrochemical Interfaces, SGEI 2015 - 227th ECS Meeting, Chicago, United States, 5/24/15. https://doi.org/10.1149/06602.0169ecst

Study of electrode performance for nanosized La_0.4Sr_0.6Co_0.8Fe_0.2O_3-δIT-SOFC cathode. / Mogni, L. V.; Yakal-Kremski, K.; Chanquía, C. M. et al.
Solid-Gas Electrochemical Interfaces � SGEI 1. ed. / E. Ivers-Tiffee; M. B. Mogensen; S. B. Adler; T. Kawada. 2. ed. Electrochemical Society Inc., 2015. p. 169-176 (ECS Transactions; Vol. 66, No. 2).

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

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T1 - Study of electrode performance for nanosized La0.4Sr0.6Co0.8Fe0.2O3-δIT-SOFC cathode

AU - Mogni, L. V.

AU - Yakal-Kremski, K.

AU - Chanquía, C. M.

AU - Gao, Z.

AU - Wang, H.

AU - Caneiro, A.

AU - Barnett, Scott A

PY - 2015/1/1

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N2 - La0.4Sr0.6Co0.8Fe0.2O3-δ (LSCF4682) perovskite was successfully synthesized by an assisted ammonium nitrate combustion method. The sample shows a sponge-like structure with meso and macropores distributed between interconnected nanosized crystallites (45 nm) with a specific surface area around 8 m2g-1. Cathode performance of LSCF4682 was investigated in the intermediate temperature range between 400 °C-700 °C by using symmetrical cell configuration on La0.8Sr0.2Ga0.8Mg0.2O3-δ (LSGM) electrolyte. The cathode polarization resistances Rc,p are 0.067 and 0.035 O.cm2 at 600 °C and 700 °C, respectively. The long-term behavior of Rc,p was studied by applying an accelerate aging at 800 °C and testing the polarization resistance at 700 °C as a function of time. After 500 h of aging, a degradation rate of 1/Rc,P dRc,P/dt = 0.002 h-1raises the Rc,p to 0.1 O.cm2 at 700 °C. A maximum power density of 1.23 Wcm-2 was achieved at 650 °C testing the LSCF cathode deposited on a porous SLT-LSGM supported multilayer cell. These results demonstrate that this material is a competitive SOFC cathode for the intermediate temperature operation.

AB - La0.4Sr0.6Co0.8Fe0.2O3-δ (LSCF4682) perovskite was successfully synthesized by an assisted ammonium nitrate combustion method. The sample shows a sponge-like structure with meso and macropores distributed between interconnected nanosized crystallites (45 nm) with a specific surface area around 8 m2g-1. Cathode performance of LSCF4682 was investigated in the intermediate temperature range between 400 °C-700 °C by using symmetrical cell configuration on La0.8Sr0.2Ga0.8Mg0.2O3-δ (LSGM) electrolyte. The cathode polarization resistances Rc,p are 0.067 and 0.035 O.cm2 at 600 °C and 700 °C, respectively. The long-term behavior of Rc,p was studied by applying an accelerate aging at 800 °C and testing the polarization resistance at 700 °C as a function of time. After 500 h of aging, a degradation rate of 1/Rc,P dRc,P/dt = 0.002 h-1raises the Rc,p to 0.1 O.cm2 at 700 °C. A maximum power density of 1.23 Wcm-2 was achieved at 650 °C testing the LSCF cathode deposited on a porous SLT-LSGM supported multilayer cell. These results demonstrate that this material is a competitive SOFC cathode for the intermediate temperature operation.

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A2 - Mogensen, M. B.

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Mogni LV, Yakal-Kremski K, Chanquía CM, Gao Z, Wang H, Caneiro A et al. Study of electrode performance for nanosized La_0.4Sr_0.6Co_0.8Fe_0.2O_3-δIT-SOFC cathode. In Ivers-Tiffee E, Mogensen MB, Adler SB, Kawada T, editors, Solid-Gas Electrochemical Interfaces � SGEI 1. 2 ed. Electrochemical Society Inc. 2015. p. 169-176. (ECS Transactions; 2). doi: 10.1149/06602.0169ecst