Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | 김영범 | - |
dc.date.accessioned | 2018-03-13T01:59:48Z | - |
dc.date.available | 2018-03-13T01:59:48Z | - |
dc.date.issued | 2013-12 | - |
dc.identifier.citation | JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY, 13, 12, p7895-p7901 | en_US |
dc.identifier.issn | 1533-4880 | - |
dc.identifier.uri | http://www.ingentaconnect.com/content/asp/jnn/2013/00000013/00000012/art00020 | - |
dc.identifier.uri | http://hdl.handle.net/20.500.11754/45734 | - |
dc.description.abstract | In this work, the triple phase boundary (TPB) characteristics of the platinum (Pt)/yttria-stabilized zirconia (YSZ) interface in low-temperature solid oxide fuel cells (LT-SOFCs) was examined through the development of a novel nano electrode fabrication method utilizing nanosphere lithography and Langmuir-Blodgett methods. Dense Pt cathode structures with close-packed circular openings about 300 to 600 nm in diameter were successfully fabricated on 300 mu m-thick single crystalline YSZ substrates, through which the underlying YSZ surface was exposed to the gas phase. Fuel cell current voltage behavior and electrochemical impedance spectroscopy (EIS) measurements were carried out in the temperature range of 300 similar to 450 degrees C. The fuel cell performance, as evaluated by the peak power density, confirmed that the TPB is the actual electrochemical reaction site, as a proportional relationship was observed between the peak power density and an increase in the TPB density. In addition, electrochemical studies on the cathode interface resistance with different TPB geometries enabled a qualitative estimation of the electrochemically active region or the TPB width for the fuel cell charge transfer reaction. The fabrication and experiment methods employed in this work provide an opportunity to investigate electrode/electrolyte interface characteristics under real fuel cell operating conditions. | en_US |
dc.description.sponsorship | Young-Beom Kim gratefully acknowledges Professor Fritz Prinz at Stanford University for technical support and valuable discussions. The author acknowledges financial supports from Korea National Research Foundation (contract no. 2012R1A1A1014689) and Industry Digital Park at Hanyang University (contract #: 201200000000621). Also, the author thanks to Nano Institute of Science and Technology at Hanyang University for sharing their facilities. | en_US |
dc.language.iso | en | en_US |
dc.publisher | AMER SCIENTIFIC PUBLISHERS | en_US |
dc.subject | Low-Temperature Solid Oxide Fuel Cells | en_US |
dc.subject | Triple Phase Boundary | en_US |
dc.subject | Novel Nano Electrode Structure | en_US |
dc.subject | Nanosphere Lithography | en_US |
dc.title | Geometry-Controlled Triple Phase Boundary Study for Low-Temperature Solid Oxide Fuel Cells Reaction Kinetics | en_US |
dc.type | Article | en_US |
dc.relation.no | 12 | - |
dc.relation.volume | 13 | - |
dc.identifier.doi | 10.1166/jnn.2013.8104 | - |
dc.relation.page | 7895-7901 | - |
dc.relation.journal | JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY | - |
dc.contributor.googleauthor | Kim, Young-Beom | - |
dc.relation.code | 2013010833 | - |
dc.sector.campus | S | - |
dc.sector.daehak | COLLEGE OF ENGINEERING[S] | - |
dc.sector.department | DIVISION OF MECHANICAL ENGINEERING | - |
dc.identifier.pid | ybkim | - |
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