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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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Investigation of the Fe doping effect on the B-site of the layered perovskite PrBa0.8Ca0.2Co2O5+δ for a promising cathode material of the intermediate-temperature solid oxide fuel cells

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dc.contributor.author Lim, Chaehyun ko
dc.contributor.author Sengodan, Sivaprakash ko
dc.contributor.author Jeong, Donghwi ko
dc.contributor.author Shin, Jeeyoung ko
dc.contributor.author Kim, Guntae ko
dc.date.available 2019-01-03T11:42:23Z -
dc.date.created 2019-01-02 ko
dc.date.issued 2019-01 ko
dc.identifier.citation INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, v.44, no.2, pp.1088 - 1095 ko
dc.identifier.issn 0360-3199 ko
dc.identifier.uri https://scholarworks.unist.ac.kr/handle/201301/25537 -
dc.description.abstract Layered perovskites can be considered as promising cathode materials for intermediate-temperature solid oxide fuel cell because of their fast oxygen kinetics compared to simple perovskites. Among them, the cobalt-based layered perovskites are considered as very promising cathode materials due to its high conductivity and fast oxygen kinetics, but they are unstable under operating condition. Doping other transition metal such as Fe, Mn, Cu, and Ni can be considered to solve the instability of the cobalt-based layered perovskites. In this paper, we investigated Fe doped cobalt-based layered perovskite, PrBa0.8Ca0.2Co2-xFexO5+δ (x = 0, 0.5, and 1.0), as prospective cathode materials in terms of their crystal structures, thermal expansion behavior, electro- and electro-chemical properties. The PrBa0.8Ca0.2Co1.5Fe0.5O5+δ shows improved maximum power density of 1.89 W cm−2 and polarization resistance of 0.080 Ω cm2 at 600 °C as compared with un-doped PrBa0.8Ca0.2Co2O5+δ while maintaining suppressed thermal expansion. Based on these results, PrBa0.8Ca0.2Co1.5Fe0.5O5+δ can be considered as a promising cathode material for intermediate-temperature solid oxide fuel cell. ko
dc.language 영어 ko
dc.publisher PERGAMON-ELSEVIER SCIENCE LTD ko
dc.title Investigation of the Fe doping effect on the B-site of the layered perovskite PrBa0.8Ca0.2Co2O5+δ for a promising cathode material of the intermediate-temperature solid oxide fuel cells ko
dc.type ARTICLE ko
dc.identifier.scopusid 2-s2.0-85058170239 ko
dc.identifier.wosid 000456355600051 ko
dc.type.rims ART ko
dc.identifier.doi 10.1016/j.ijhydene.2018.10.182 ko
dc.identifier.url https://www.sciencedirect.com/science/article/pii/S0360319918334451 ko
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