• 한국전기화학회:학술대회논문집
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• 2001.06a
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• pp.108-113
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• 2001

• 한국전기화학회:학술대회논문집
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• 2003.10a
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• pp.9-9
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• 2003

• 한국전기화학회:학술대회논문집
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• 2003.07a
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• pp.107-111
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• 2003

• 한국전기화학회:학술대회논문집
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• 2003.07a
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• pp.113-116
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• 2003

• 한국전기화학회:학술대회논문집
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• 1999.04a
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• pp.82-82
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• 1999

• 한국전기화학회:학술대회논문집
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• 2004.06a
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• pp.75-76
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• 2004

• Journal of the Korean Ceramic Society
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• v.44 no.8
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• pp.424-429
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• 2007

Novel conductive $CO_2$ membranes composed of dual phases, molten carbonates and electronic conducting ceramics, were investigated. As the microstructure control of electronic conducting ceramic supports is extremely important to keep the molten carbonates stable in the membranes by a capillary force applied by the pore structure of the supports, we have scrutinized the microstructure of the electronic conducting supports utilizing microscopic images and gas permeability measurement. From the evaluation of the electrical conductivities of the molten carbonates and the electronic conducting ceramic supports, we found that the ionic conductivity of the molten carbonates could determine $CO_2$ flux through the dual phase membranes if the surface exchange rate were relatively high enough.

• Journal of the Korean Electrochemical Society
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• v.13 no.3
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• pp.203-210
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• 2010

NiO is commonly used as the cathode for the molten carbonate fuel cell due to its stability and high electrical conductivity in molten carbonates and oxygen atmosphere. However, long-term operation of MCFC has a serious problem which is the degradation of cathode material, the so-called Ni dissolution. In the present study, we have attempted to synthesize a new alternative cathode material as Co/Nb-coated NiO cathode. The results obtained in this study suggest that the Co/Nb-coated NiO cathode can be utilized as having lower dissolution and higher cell performance than those of the pure NiO cathode.

• Journal of Korean Society of Water and Wastewater
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• v.21 no.4
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• pp.439-444
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• 2007

Using the anaerobic digester gas as a fuel, fuel cells have the potential to provide significant environmental and economic benefits. A molten carbonate fuel cell power plant was installed in the municipal sewage works of Tancheon in Seoul. The fuel cell unit operates on anaerobic digester gas and provides power and heat for the sewage works. This is the first project of its kind in Korea. This article outlines the experiences of gas purification process with planning, installation and operation. The engineering and installation phase is described regarding to the special features of digester gas, for example impurities in gas composition. Such impurities would be harmful to fuel cells. Operational results from the field test with a gas purification process plant are presented in this paper.

• Proceedings of the KSME Conference
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• 2001.06d
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• pp.146-151
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• 2001

Several design parameters for a 100 kW molten carbonate fuel cell stack was described. Approximately 170 cells are required to generate 100 kW at a current density of $125\;mA/cm^{2}$ with $6000\;cm^{2}$ cells. An overall heat balance was calculated to predict exit temperature. In order to limit the stack temperature in the range of $600-700^{\circ}C$, current load cannot exceed $75\;mA/cm^{2}$ at atmospheric operation. The 100 kW power is expected only under pressurization. Recycle of cathode gas by more than 50% is recommended to run the stack at $125\;mA/cm^{2}$ and 3 atm. Manifolds should be designed based on gas flow rates for the suggested operating condition.