Performance evolution of niobium doped lanthanum strontium ferrate perovskite anode for solid oxide fuel cells

J. Li; Z. Lü; J. T.S. Irvine

doi:10.1149/09101.1693ecst

Performance evolution of niobium doped lanthanum strontium ferrate perovskite anode for solid oxide fuel cells

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

Abstract

In this paper, evolutions of La_0.8Sr_0.2Fe_0.9Nb_0.1O_3-δ (LSFNb) anodes for solid oxide fuel cells (SOFCs) with different microstructures are investigated, which are prepared by adjusting the weight ratio of electrode powder/organic binder during the preparation of slurries. AC impedance spectra clearly reveals that LSFNb anode made from 7:4-slurry shows better microstructure and lower polarization resistance (R_P) compared with those of LSFNb anode made from 7:2.5-slurry. Better electrochemical performance is obtained on the single cells using 7:4-anode and cathode slurries with maximum power density (MPD) reaching 331.9 mW·cm^-2 after discharged for 200 h fueled by H₂, compared with 285.8 mW·cm^-2 of the cell made from 7:2.5-slurries. The two cells exhibit excellent stability with undetectable degenerations for over 200 h. These results demonstrate that LSFNb made from thin slurries possesses better electrochemical performance and can active continuously without significant agglomeration, making porous LSFNb a promising perovskite anode candidate for SOFCs.

Original language	English
Title of host publication	Solid Oxide Fuel Cells 16, SOFC XVI
Editors	K. Eguchi, S. C. Singhal
Publisher	Electrochemical Society, Inc.
Pages	1693-1700
Number of pages	8
ISBN (Electronic)	9781607685395
DOIs	https://doi.org/10.1149/09101.1693ecst
Publication status	Published - 8 Sept 2019
Event	16th International Symposium on Solid Oxide Fuel Cells, SOFC XVI - Kyoto, Japan Duration: 8 Sept 2019 → 13 Sept 2019 Conference number: 16 http://www.eguchi-lab.ehcc.kyoto-u.ac.jp/SOFC_XVI/

Publication series

Name	ECS Transactions
Number	1
Volume	91
ISSN (Print)	1938-6737
ISSN (Electronic)	1938-5862

Conference

Conference	16th International Symposium on Solid Oxide Fuel Cells, SOFC XVI
Abbreviated title	SOFC
Country/Territory	Japan
City	Kyoto
Period	8/09/19 → 13/09/19
Internet address	http://www.eguchi-lab.ehcc.kyoto-u.ac.jp/SOFC_XVI/

Access to Document

10.1149/09101.1693ecst

Li-2019-Performance-evolution-of-niobium-SOFC-XVI-AAM
© 2019 ECS - The Electrochemical Society. This work has been made available online in accordance with publisher policies or with permission. Permission for further reuse of this content should be sought from the publisher or the rights holder. This is the author created accepted 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/10.1149/09101.1693ecst
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Cite this

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title = "Performance evolution of niobium doped lanthanum strontium ferrate perovskite anode for solid oxide fuel cells",

abstract = "In this paper, evolutions of La0.8Sr0.2Fe0.9Nb0.1O3-δ (LSFNb) anodes for solid oxide fuel cells (SOFCs) with different microstructures are investigated, which are prepared by adjusting the weight ratio of electrode powder/organic binder during the preparation of slurries. AC impedance spectra clearly reveals that LSFNb anode made from 7:4-slurry shows better microstructure and lower polarization resistance (RP) compared with those of LSFNb anode made from 7:2.5-slurry. Better electrochemical performance is obtained on the single cells using 7:4-anode and cathode slurries with maximum power density (MPD) reaching 331.9 mW·cm-2 after discharged for 200 h fueled by H2, compared with 285.8 mW·cm-2 of the cell made from 7:2.5-slurries. The two cells exhibit excellent stability with undetectable degenerations for over 200 h. These results demonstrate that LSFNb made from thin slurries possesses better electrochemical performance and can active continuously without significant agglomeration, making porous LSFNb a promising perovskite anode candidate for SOFCs.",

author = "J. Li and Z. L{\"u} and Irvine, {J. T.S.}",

year = "2019",

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doi = "10.1149/09101.1693ecst",

language = "English",

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publisher = "Electrochemical Society, Inc.",

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booktitle = "Solid Oxide Fuel Cells 16, SOFC XVI",

address = "United States",

note = "16th International Symposium on Solid Oxide Fuel Cells, SOFC XVI, SOFC ; Conference date: 08-09-2019 Through 13-09-2019",

url = "http://www.eguchi-lab.ehcc.kyoto-u.ac.jp/SOFC_XVI/",

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Li, J, Lü, Z & Irvine, JTS 2019, Performance evolution of niobium doped lanthanum strontium ferrate perovskite anode for solid oxide fuel cells. in K Eguchi & SC Singhal (eds), Solid Oxide Fuel Cells 16, SOFC XVI. ECS Transactions, no. 1, vol. 91, Electrochemical Society, Inc., pp. 1693-1700, 16th International Symposium on Solid Oxide Fuel Cells, SOFC XVI, Kyoto, Japan, 8/09/19. https://doi.org/10.1149/09101.1693ecst

Performance evolution of niobium doped lanthanum strontium ferrate perovskite anode for solid oxide fuel cells. / Li, J.; Lü, Z.; Irvine, J. T.S.
Solid Oxide Fuel Cells 16, SOFC XVI. ed. / K. Eguchi; S. C. Singhal. Electrochemical Society, Inc., 2019. p. 1693-1700 (ECS Transactions; Vol. 91, No. 1).

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

TY - GEN

T1 - Performance evolution of niobium doped lanthanum strontium ferrate perovskite anode for solid oxide fuel cells

AU - Li, J.

AU - Lü, Z.

AU - Irvine, J. T.S.

N1 - Conference code: 16

PY - 2019/9/8

Y1 - 2019/9/8

N2 - In this paper, evolutions of La0.8Sr0.2Fe0.9Nb0.1O3-δ (LSFNb) anodes for solid oxide fuel cells (SOFCs) with different microstructures are investigated, which are prepared by adjusting the weight ratio of electrode powder/organic binder during the preparation of slurries. AC impedance spectra clearly reveals that LSFNb anode made from 7:4-slurry shows better microstructure and lower polarization resistance (RP) compared with those of LSFNb anode made from 7:2.5-slurry. Better electrochemical performance is obtained on the single cells using 7:4-anode and cathode slurries with maximum power density (MPD) reaching 331.9 mW·cm-2 after discharged for 200 h fueled by H2, compared with 285.8 mW·cm-2 of the cell made from 7:2.5-slurries. The two cells exhibit excellent stability with undetectable degenerations for over 200 h. These results demonstrate that LSFNb made from thin slurries possesses better electrochemical performance and can active continuously without significant agglomeration, making porous LSFNb a promising perovskite anode candidate for SOFCs.

AB - In this paper, evolutions of La0.8Sr0.2Fe0.9Nb0.1O3-δ (LSFNb) anodes for solid oxide fuel cells (SOFCs) with different microstructures are investigated, which are prepared by adjusting the weight ratio of electrode powder/organic binder during the preparation of slurries. AC impedance spectra clearly reveals that LSFNb anode made from 7:4-slurry shows better microstructure and lower polarization resistance (RP) compared with those of LSFNb anode made from 7:2.5-slurry. Better electrochemical performance is obtained on the single cells using 7:4-anode and cathode slurries with maximum power density (MPD) reaching 331.9 mW·cm-2 after discharged for 200 h fueled by H2, compared with 285.8 mW·cm-2 of the cell made from 7:2.5-slurries. The two cells exhibit excellent stability with undetectable degenerations for over 200 h. These results demonstrate that LSFNb made from thin slurries possesses better electrochemical performance and can active continuously without significant agglomeration, making porous LSFNb a promising perovskite anode candidate for SOFCs.

U2 - 10.1149/09101.1693ecst

DO - 10.1149/09101.1693ecst

M3 - Conference contribution

AN - SCOPUS:85073186043

T3 - ECS Transactions

SP - 1693

EP - 1700

BT - Solid Oxide Fuel Cells 16, SOFC XVI

A2 - Eguchi, K.

A2 - Singhal, S. C.

PB - Electrochemical Society, Inc.

T2 - 16th International Symposium on Solid Oxide Fuel Cells, SOFC XVI

Y2 - 8 September 2019 through 13 September 2019

ER -

Performance evolution of niobium doped lanthanum strontium ferrate perovskite anode for solid oxide fuel cells

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