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Synthesis and electrochemical characterization of T* La0.84Sm0.96Sr0.2CuO4 as a cathode material for IT-SOFC

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

DOI

Author(s)

Akshaya K. Satapathy, J. T. S. Irvine

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Abstract

The synthesis and electrochemical characterisation of T* based La0.84Sm0.96Sr0.2CuO4 (LSSCu) has been carried out in order to use as a cathode material for intermediate temperature solid oxide fuel cell application. XRD studies shows, the phase pure material and matches with the JCPDF (# 79-1861), belong to space group of P4/nmm. The electrical conductivity value decreases from 52 Scm(-1) at room temperature to 18.3 Scm(-1) at 850 degrees C showing metallic behaviour in all temperature range. A decrease in conductivity, decreasing the partial pressure of oxygen implying the above material is p-type conductor. The Coefficient of thermal expansion value measured from Dilatometry is 14.4 * 10 (-6) K-1 which matches with La0.9Sr0.1Ga0.8Mg0.2 (LSGM). Symmetrical cell testing results shows that the area specific resistance is 0.02 Omega.cm(2) at 800 degrees C when the 1:1 weight ratio of the LSSCu and LSGM composite was screen printed on LSGM electrolyte and sintered at 900 degrees C for 1 hr.

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Details

Original languageEnglish
Title of host publicationHIGH TEMPERATURE EXPERIMENTAL TECHNIQUES AND MEASUREMENTS
EditorsG Jackson, E Opila, A Manivanan, T Markus, R Walker
Place of PublicationPENNINGTON
PublisherELECTROCHEMICAL SOC INC
Pages93-99
Number of pages7
ISBN (Print)978-1-60768-448-0
DOIs
Publication statusPublished - 2013
EventConference on High Temperature Experimental Techniques and Measurements at the 224th Electrochemical-Society Meeting (ECS) - San Francisco, Canada
Duration: 27 Oct 2013 → 1 Nov 2013

Publication series

NameECS Transactions
PublisherELECTROCHEMICAL SOC INC
Volume58
ISSN (Print)1938-5862

Conference

ConferenceConference on High Temperature Experimental Techniques and Measurements at the 224th Electrochemical-Society Meeting (ECS)
CountryCanada
Period27/10/13 → 1/11/13

    Research areas

  • OXIDE FUEL-CELLS, TRANSPORT, PERFORMANCE

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