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이성일,김귀열 충주대 산업과학기술연구소 1996 産業科學論文集 Vol.4 No.-
In this paper, the cathode materials of solid oxide fuel cell were fabricated, and the analysis of TG/DTA, XRD, thermal expansion were investigated. As a result, thermal expansion coefficient of LSM was not quite different from that of electrolyte. And a performance of LSM(x=0.4) was better excellent than the others.
High Temperature Nox Sensors Combining Stabilized Zirconia with Mixed - Metal Oxide Electrode
Gwi Yeol Kim 대한공업교육학회 2001 대한공업교육학회지 Vol.26 No.2
고온 NOx 센서의 산화물 전극재료에 대한 연구가 혼합금속산화물까지 확대되고 있다. 페로브스카이트형 산화물과 스피넬형 산화물의 연구를 통해, CdCr₂O₄가 NO와 NO₂에 대한 우수한 감지특성을 확인하였다. CdCr₂O₄을 부착한 소자가 온도 500-600℃에서 EMF와 NO 혹은 NO₂ 농도사이에 선형성을 나타내었다. 더군다나, CO, H₂, CH₄, CO₂ 와 수증기에 대한 고감도 뿐 만 아니라, 신속한 반응과 회복운동을 확인하였으며, 또한 혼성 전위메카니즘을 알 수 있었다.
Fabrication and Performances on Unit Cell of Solid Oxide Fuel Cell
Kim, Gwi-Yeol,Lee, Jin-Seop CHOSUN UNIVERSITY 1997 Basic Science and Engineering Vol.1 No.2
For the purpose of reducing production costs, we have fabricated unit cell for SOFC by doctor blade and screen printing method. Planar Solid Oxide Fuel Cell with an effective electrode area of about 7㎠ were fabricated and run for 510h to investigate cell performances. The curent density at the voltage of 0.7V was 850㎃/㎠.
Study of Corrosion behavior of the Separator for MCFC
Kim, Gwi-Yeol The Korean Institute of Electrical and Electronic 2007 Transactions on Electrical and Electronic Material Vol.8 No.6
The molten carbonate fuel cell has conspicuous feature and high potential in being used as an energy converter of various fuel to electricity and heat. However, the molten carbonate fuel cell which use strongly corrosive molten carbonate at $650^{\circ}C$ have many problem. Systematic investigation on corrosion behavior of stainless steels has been done 62 mole% $Li_2CO_3$ and 38 mole% $K_2CO_3$ melt at 923 K by using steady-state polarization method and electrochemical impedance spectroscopy method. It was found that SUS 310L and Al coating specimen may be the best choice among the alloys tested in this study for molten carbonate fuel cell component material.
Cell Fabrication and Performances of SOFC prepared by DBM and SPM
Kim, Gwi-Yeol The Korean Institute of Electrical and Electronic 2007 Transactions on Electrical and Electronic Material Vol.8 No.6
The research and development for the solid oxide fuel cell have been promoted rapidly and extensively in recent years, because of their high efficiency and future potential. Therefore this paper describes the manufacturing method and characteristics of anode electrode for solid oxide fuel cell, by the way, Ni-YSZ materials are used as anode of solid oxide fuel cell widely. In order to reduce production costs, we have fabricated single solid oxide fuel cell by doctor blade and screen printing method. Disk-type planar solid oxide fuel cell with an effective electrode area of about $7cm^2$ were fabricated and run for 500 h to investigate cell performance. The current density at a voltage of 0.7 V was $850mA/cm^2$.
Study of Corrosion behavior of the Separatorfor MCFC
Gwi-Yeol Kim 한국전기전자재료학회 2007 Transactions on Electrical and Electronic Material Vol.8 No.6
The molten carbonate fuel cell has conspicuous feature and high potential in being used as an energy converter of various fuel to electricity and heat. However, the molten carbonate fuel cell which use strongly corrosive molten carbonate at 650 oC have many problem. Systematic investigation on corrosion behavior of stainless steels has been done 62 mole% Li2CO3 and 38 mole% K2CO3 melt at 923 K by using steady-state polarization method and electrochemical impedance spectroscopy method. It was found that SUS 310L and Al coating specimen may be the best choice among the alloys tested in this study for molten carbonate fuel cell component material.
A study on the abnormal conduction properties of Oriented Polypropylene
Gwi Yeol Kim 대한공업교육학회 2002 대한공업교육학회지 Vol.27 No.1
In order to investigate the conduction characteristics of the biaxially oriented polypropylene film, several measurements have been carried out in the range of temperature between 5℃ and 55℃ as well as the field intensity between 10MV/m and 300MV/m. The whole range of the characteristics observed at 15℃ appears to be divided into five regions; the Ohmic conduction region due to ionic carrier below 40MV/m, the region from 40MV/m to 70MV/m in which the conduction mechanism is attributed to Poole-Frenkel effect, the region from 70MV/m to 82MV/m in which being observed the negative resistance characteristics, then the region from 82MV/m to 240MV/m being dominated by Schottky effect and finally, the region from 240MV/m up to the point where dielectric breakdown to occur in which the mechanism is based on Fowler-Nordheim theory.
Cell Fabrication and Performances of SOFC preparedby DBM and SPM
Gwi-Yeol Kim 한국전기전자재료학회 2007 Transactions on Electrical and Electronic Material Vol.8 No.6
The research and development for the solid oxide fuel cell have been promoted rapidly and extensively in recent years, because of their high efficiency and future potential. Therefore this paper describes the manufacturing method and characteristics of anode electrode for solid oxide fuel cell, by the way, Ni-YSZ materials are used as anode of solid oxide fuel cell widely. In order to reduce production costs, we have fabricated single solid oxide fuel cell by doctor blade and screen printing method. Disk-type planar solid oxide fuel cell with an effective electrode area of about 7 cm2 were fabricated and run for 500 h to investigate cell performance. The current density at a voltage of 0.7 V was 850 mA/cm2.