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Kim, Guntae
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Research Interests
  • Solid Oxide Fuel Cells (SOFCs)& SOE, PEMFC, metal-air batteries, Metal-CO2 system, Catalyst for DRM

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Thermodynamic and electrical properties of Ba0.5Sr0.5Co0.8Fe0.2O3-delta and La0.6Sr0.4Co0.2Fe0.8O3-delta for intermediate-temperature solid oxide fuel cells

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dc.contributor.author Jun, Areum ko
dc.contributor.author Yoo, Seonyoung ko
dc.contributor.author Gwon, Oh-hun ko
dc.contributor.author Shin, Jeeyoung ko
dc.contributor.author Kim, Guntae ko
dc.date.available 2014-04-10T01:43:07Z -
dc.date.created 2013-06-24 ko
dc.date.issued 2013-02 -
dc.identifier.citation ELECTROCHIMICA ACTA, v.89, no., pp.372 - 376 ko
dc.identifier.issn 0013-4686 ko
dc.identifier.uri https://scholarworks.unist.ac.kr/handle/201301/3289 -
dc.identifier.uri http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=84871371853 ko
dc.description.abstract Perovskite type oxides based on alkaline-earth and/or rare-earth containing cobaltites with high electronic and ionic conductivities are suitable for cathodes for intermediate-temperature solid oxide fuel cells (IT-SOFCs). Much of the prior work, in particular, has been focused on Ba0.5Sr0.5Co0.8Fe0.2O3-delta (BSCF) and La0.6Sr0.4Co0.2Fe0.8O3-delta (LSCF) because of their high catalytic activity and a sufficiently high electronic conductivity. This study focuses on the redox behavior and stability of BSCF and LSCF at low oxygen partial pressures. The variation of oxygen non-stoichiometry (delta) and its effect on the electrical conductivity of the BSCF and LSCF are investigated using coulometric titration in a wide range of oxygen partial pressure. Thermodynamic properties including oxidation enthalpies and entropies are determined from the oxidation isotherms. The BSCF and LSCF are considered to be a suitable cathode material of IT-SOFC in terms of electrical conductivity and redox stability. ko
dc.description.statementofresponsibility close -
dc.language ENG ko
dc.publisher PERGAMON-ELSEVIER SCIENCE LTD ko
dc.subject Alkaline earth ko
dc.subject Cath-ode materials ko
dc.subject Coulometric titration ko
dc.subject Electrical conductivity ko
dc.subject Electronic and ionic conductivity ko
dc.subject Electronic conductivity ko
dc.subject Intermediate temperature solid oxide fuel cell ko
dc.subject IT-SOFCs ko
dc.subject Low oxygen partial pressure ko
dc.subject Oxygen non-stoichiometry ko
dc.subject Oxygen partial pressure ko
dc.subject Perovskite type oxides ko
dc.subject Redox behavior ko
dc.subject Redox stability ko
dc.title Thermodynamic and electrical properties of Ba0.5Sr0.5Co0.8Fe0.2O3-delta and La0.6Sr0.4Co0.2Fe0.8O3-delta for intermediate-temperature solid oxide fuel cells ko
dc.type ARTICLE ko
dc.identifier.scopusid 2-s2.0-84871371853 ko
dc.identifier.wosid 000315558200048 ko
dc.type.rims ART ko
dc.description.scopustc 8 *
dc.date.scptcdate 2014-07-12 *
dc.identifier.doi 10.1016/j.electacta.2012.11.002 ko
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