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dc.contributor.author신동욱-
dc.date.accessioned2018-03-13T08:57:57Z-
dc.date.available2018-03-13T08:57:57Z-
dc.date.issued2014-05-
dc.identifier.citationINTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 권: 39, 호: 26, 페이지: 14322-14327en_US
dc.identifier.issn0360-3199-
dc.identifier.issn1879-3487-
dc.identifier.urihttps://www.sciencedirect.com/science/article/pii/S0360319914011628?via%3Dihub-
dc.identifier.urihttp://hdl.handle.net/20.500.11754/46264-
dc.description.abstractThe cobalt-based cathode, LSCF, BSCF and SSC, have high thermal expansion coefficients, which cause poor thermal compatibility with electrolytes and limited cell performance. In this work, a continuously gradient Sm0.5Sr0.5CoO3-delta (SSC) - BaCe0.7Zr0.2Y0.1O3-delta (BCZY) composite cathode was developed for BCZY electrolyte based fuel cells by electrostatic spray slurry deposition (ESSD). In the deposited cathode the content of BCZY gradually decreased and that of SSC gradually increased in the direction away from the electrolyte -cathode interface. The single cell, consisting of a BCZY-NiO anode substrate, a BCZY electrolyte and a compositionally gradient SSC-BCZY cathode layer, was assembled and tested from 550 to 700 degrees C under humidified hydrogen atmosphere (similar to 3% H2O) and static air as an oxidant. The cross-sectional morphology of the cathode was examined by energy dispersive X-ray (EDX) analysis. The comparison of electrochemical performances between various cathode configurations was conducted to demonstrate the effect of gradient cathode. The power density and impedance spectra indicate that the optimized cathode structure greatly improves the polarization resistance and ohmic resistance. The results suggest that the migration of protons to triple phase boundaries (TPBs) and the surface diffusion of O- might be enhanced in the gradient SSC-BCZY composite cathodes. Copyright (C) 2014, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.en_US
dc.description.sponsorshipThis work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIP) (No. NRF-2011-0019319 and also No. NRF-2013R1A2A2A01015189).en_US
dc.language.isoenen_US
dc.publisherPERGAMON-ELSEVIER SCIENCE LTD, THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLANDen_US
dc.subjectProton conducting fuel cellen_US
dc.subjectContinuously gradient composite cathodeen_US
dc.subjectElectrostatic slurry spray depositionen_US
dc.subjectPerovskite electrolyteen_US
dc.titleElectrochemical performance of continuously gradient composite cathode fabricated by electro-static slurry spray depositionen_US
dc.typeArticleen_US
dc.relation.no26-
dc.relation.volume39-
dc.identifier.doi10.1016/j.ijhydene.2014.04.106-
dc.relation.page14322-14327-
dc.relation.journalINTERNATIONAL JOURNAL OF HYDROGEN ENERGY-
dc.contributor.googleauthorLee, Hunhyeong-
dc.contributor.googleauthorChoi, Jinyi-
dc.contributor.googleauthorPark, Inyu-
dc.contributor.googleauthorShin, Dongwook-
dc.relation.code2014031541-
dc.sector.campusS-
dc.sector.daehakCOLLEGE OF ENGINEERING[S]-
dc.sector.departmentDIVISION OF MATERIALS SCIENCE AND ENGINEERING-
dc.identifier.piddwshin-
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > MATERIALS SCIENCE AND ENGINEERING(신소재공학부) > Articles
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