• Title/Summary/Keyword: 탄산염

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Characterization of (Co/Nb)-coated NiO as a Cathode Material for Molten Carbonate Fuel Cells (코발트와 나이오븀이 코팅된 NiO 용융탄산염 연료전지 양극물질 특성 연구)

  • Choi, Hee-Seon;Yi, Cheol-Woo;Kim, Keon
    • 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.

  • https://doi.org/10.5229/JKES.2010.13.3.203 인용 PDF KSCI

Influence of Painting Materials based on Wasted Oil and Applying Timing on Carbonation and Chloride Resistances of High Volume SCM Concrete (폐유지류를 중심으로 한 도포제 종류 및 도포시기 변화가 혼화재 다량치환 콘크리트의 탄산화 및 염해저항성에 미치는 영향)

  • Han, Cheon-Goo;Choi, Young-Doo
    • Journal of the Korean Recycled Construction Resources Institute
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    • v.3 no.3
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    • pp.228-236
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    • 2015

  • In this research, the influence of painting materials and applying timing on carbonation and chloride resistances of high volume SCMs concrete was evaluated. As a durability improving method, comparative tests were conducted with painting materials of ERCO (emulsified refined cooking oil), RCO (refined cooking oil), WR (water repellent agent), and ERCO + WR and with painting timings of right after demolding, and 28 days after the wet curing. From the experiment results, in the case of carbonation and chloride resistance, the carbonation depth and chloride penetration depth were decreased when the painting materials were applied in 28 days of wet curing. Additionally, for painting materials, with the order of ERCO, RCO, ERCO+WR, and WR, the carbonation and chloride penentration was delayed. Hence it is considered that ERCO shows the most favorable performance of resistance against carbonation and chloride penetration.

  • https://doi.org/10.14190/JRCR.2015.3.3.228 인용 PDF KSCI