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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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Oxygen non-stoichiometry, defect equilibrium and electrical properties of La0.8Sr0.2Sc0.2Mn0.8O 3±δ

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dc.contributor.author Kim, Guntae ko
dc.contributor.author Sengodan, Sivapraka ko
dc.contributor.author Kim, Junyoung ko
dc.contributor.author Shin, Jeeyoung ko
dc.date.available 2014-09-18T02:26:39Z -
dc.date.created 2014-09-16 ko
dc.date.issued 2013-01 ko
dc.identifier.citation ECS Transactions, v.57, no.1, pp.1647 - 1654 ko
dc.identifier.issn 1938-5862 ko
dc.identifier.uri https://scholarworks.unist.ac.kr/handle/201301/6139 -
dc.description.abstract Non-stoichiometric variation of oxygen content in La0.8Sr 0.2Sc0.2Mn0.8O3±δ were determined by means of coulometric titration as a function of oxygen partial pressure p(O2) and temperature. La0.8Sr0.2Sc 0.2Mn0.8O3±δ oxides shows oxygen excess and oxygen deficient composition depending on p(O2). Random defect model was constructed based on the experimental oxygen non-stoichiometry. The non-stoichiometric variation of oxygen content of La0.8Sr 0.2Sc0.2Mn0.8O3±δ can be explained by the defect equilibrium model. Thermodynamic quantities such as partial molar enthalpy and partial molar entropy were calculated using Gibbs-Hemholtz equation. Electrical conductivity measurements were performed as a function of oxygen partial pressure and temperature, which shows a typical p-type behavior. ko
dc.description.statementofresponsibility close -
dc.language 영어 ko
dc.publisher The Electrochemical Society ko
dc.title Oxygen non-stoichiometry, defect equilibrium and electrical properties of La0.8Sr0.2Sc0.2Mn0.8O 3±δ ko
dc.type ARTICLE ko
dc.identifier.scopusid 2-s2.0-84905027684 ko
dc.identifier.wosid 000338989003019 ko
dc.type.rims ART ko
dc.description.wostc 0 *
dc.description.scopustc 0 *
dc.date.tcdate 2015-05-06 *
dc.identifier.doi 10.1149/05701.1647ecst ko
dc.identifier.url http://ecst.ecsdl.org/content/57/1/1647 ko
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