Effect of infiltrate solution additives on samarium strontium cobaltite-cerium gadolinium oxide nano-composite SOFC cathodes

J. D. Nicholas, S. A. Barnett

Research output: ResearchConference contribution

Abstract

Nano-composite SSC (Sm0.5Sr0.5CoO3-x)-GDC (Ce0.9Gd0.1O1.95) Solid Oxide Fuel Cell cathodes were produced by infiltrating SSC nitrate solutions with/without additives into GDC scaffolds. X-ray diffraction indicated that fired precursor solutions containing the surfactant Triton X-100 had less secondary phases than similarly processed pure nitrate solutions. Further, precursor solutions containing citric acid, a chelating agent, produced nearly phase-pure SSC after 1 hour at 800°C These solution additives did not have a large effect on the cathode polarization resistance. In contrast, alterations of the infiltration procedure influenced the SSC nano-particle size and hence the polarization resistance. Polarization resistances of 0.1 Ω·cm2 at 600°C were achieved with a single infiltration of concentrated solution. Polarization resistance predictions made using microstructural observations and a modified Tanner, Fung, Virkar model were found to be within 40% (without fitting parameters) of the experimentally measured values, regardless of the testing temperature, cathode thickness, solution additives, and cathode synthesis conditions.

LanguageEnglish (US)
Title of host publicationECS Transactions
Pages2435-2442
Number of pages8
Volume25
Edition2 PART 3
DOIs
StatePublished - 2009
Externally publishedYes
Event11th International Symposium on Solid Oxide Fuel Cells (SOFC-XI)- 216th ECS Meeting - Vienna, Austria
Duration: Oct 4 2009Oct 9 2009

Other

Other11th International Symposium on Solid Oxide Fuel Cells (SOFC-XI)- 216th ECS Meeting
CountryAustria
CityVienna
Period10/4/0910/9/09

Profile

Samarium
Gadolinium
Cerium
Strontium
Solid oxide fuel cells (SOFC)
Cathodes
Oxides
Composite materials
Polarization
Infiltration
Nitrates
Citric acid
Chelation
Scaffolds
Surface active agents
Particle size
X ray diffraction
Testing
Temperature

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Effect of infiltrate solution additives on samarium strontium cobaltite-cerium gadolinium oxide nano-composite SOFC cathodes. / Nicholas, J. D.; Barnett, S. A.

ECS Transactions. Vol. 25 2 PART 3. ed. 2009. p. 2435-2442.

Research output: ResearchConference contribution

Nicholas, JD & Barnett, SA 2009, Effect of infiltrate solution additives on samarium strontium cobaltite-cerium gadolinium oxide nano-composite SOFC cathodes. in ECS Transactions. 2 PART 3 edn, vol. 25, pp. 2435-2442, 11th International Symposium on Solid Oxide Fuel Cells (SOFC-XI)- 216th ECS Meeting, Vienna, Austria, 10/4/09. DOI: 10.1149/1.3205798
@inbook{da0ec9a7f6b34da48c061231f74b223a,
title = "Effect of infiltrate solution additives on samarium strontium cobaltite-cerium gadolinium oxide nano-composite SOFC cathodes",
abstract = "Nano-composite SSC (Sm0.5Sr0.5CoO3-x)-GDC (Ce0.9Gd0.1O1.95) Solid Oxide Fuel Cell cathodes were produced by infiltrating SSC nitrate solutions with/without additives into GDC scaffolds. X-ray diffraction indicated that fired precursor solutions containing the surfactant Triton X-100 had less secondary phases than similarly processed pure nitrate solutions. Further, precursor solutions containing citric acid, a chelating agent, produced nearly phase-pure SSC after 1 hour at 800°C These solution additives did not have a large effect on the cathode polarization resistance. In contrast, alterations of the infiltration procedure influenced the SSC nano-particle size and hence the polarization resistance. Polarization resistances of 0.1 Ω·cm2 at 600°C were achieved with a single infiltration of concentrated solution. Polarization resistance predictions made using microstructural observations and a modified Tanner, Fung, Virkar model were found to be within 40% (without fitting parameters) of the experimentally measured values, regardless of the testing temperature, cathode thickness, solution additives, and cathode synthesis conditions.",
author = "Nicholas, {J. D.} and Barnett, {S. A.}",
year = "2009",
doi = "10.1149/1.3205798",
isbn = "9781566777391",
volume = "25",
pages = "2435--2442",
booktitle = "ECS Transactions",
edition = "2 PART 3",

}

TY - CHAP

T1 - Effect of infiltrate solution additives on samarium strontium cobaltite-cerium gadolinium oxide nano-composite SOFC cathodes

AU - Nicholas,J. D.

AU - Barnett,S. A.

PY - 2009

Y1 - 2009

N2 - Nano-composite SSC (Sm0.5Sr0.5CoO3-x)-GDC (Ce0.9Gd0.1O1.95) Solid Oxide Fuel Cell cathodes were produced by infiltrating SSC nitrate solutions with/without additives into GDC scaffolds. X-ray diffraction indicated that fired precursor solutions containing the surfactant Triton X-100 had less secondary phases than similarly processed pure nitrate solutions. Further, precursor solutions containing citric acid, a chelating agent, produced nearly phase-pure SSC after 1 hour at 800°C These solution additives did not have a large effect on the cathode polarization resistance. In contrast, alterations of the infiltration procedure influenced the SSC nano-particle size and hence the polarization resistance. Polarization resistances of 0.1 Ω·cm2 at 600°C were achieved with a single infiltration of concentrated solution. Polarization resistance predictions made using microstructural observations and a modified Tanner, Fung, Virkar model were found to be within 40% (without fitting parameters) of the experimentally measured values, regardless of the testing temperature, cathode thickness, solution additives, and cathode synthesis conditions.

AB - Nano-composite SSC (Sm0.5Sr0.5CoO3-x)-GDC (Ce0.9Gd0.1O1.95) Solid Oxide Fuel Cell cathodes were produced by infiltrating SSC nitrate solutions with/without additives into GDC scaffolds. X-ray diffraction indicated that fired precursor solutions containing the surfactant Triton X-100 had less secondary phases than similarly processed pure nitrate solutions. Further, precursor solutions containing citric acid, a chelating agent, produced nearly phase-pure SSC after 1 hour at 800°C These solution additives did not have a large effect on the cathode polarization resistance. In contrast, alterations of the infiltration procedure influenced the SSC nano-particle size and hence the polarization resistance. Polarization resistances of 0.1 Ω·cm2 at 600°C were achieved with a single infiltration of concentrated solution. Polarization resistance predictions made using microstructural observations and a modified Tanner, Fung, Virkar model were found to be within 40% (without fitting parameters) of the experimentally measured values, regardless of the testing temperature, cathode thickness, solution additives, and cathode synthesis conditions.

UR - http://www.scopus.com/inward/record.url?scp=77649094890&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=77649094890&partnerID=8YFLogxK

U2 - 10.1149/1.3205798

DO - 10.1149/1.3205798

M3 - Conference contribution

SN - 9781566777391

VL - 25

SP - 2435

EP - 2442

BT - ECS Transactions

ER -