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침전법을 활용한 Co-Ni 전극의 제조와 용융탄산염 연료전지의 그 적용
김시열(Kim, S.Y.),류보현(Ryu, B.H.),함형철(Hahm, H.C.),한종희(Han, J.),윤성필(Yoon, S.P.),남석우(Nam, S.W.),임태훈(Lim, T.H.),이호인(Lee, H.I.) 한국신재생에너지학회 2008 신재생에너지 Vol.4 No.1
In-situ lithiated NiO has been manufactured as a conventional cathode material of molten carbonate fuel cell (MCFC), however this material has a weakness for commercialization of MCFC because NiO is spontaneously dissolved into the electrolyte under MCFC operating conditions, resulting in short circuit between cathode and anode. In this research, therefore, Co(OH)₂-coated Ni powder was prepared by precipitation method with controlling pH at low temperature and atmospheric pressure. Modified cathode was fabricated by a conventional tape casting method and sintered at 700?C in a H₂/N₂ atmosphere, Based on characterization result, Pore size distribution and porosity was suitable for the cathode of MCFC. According to the result of dissolution, Ni solubility of modified cathode was 33% lower than that of conventional cathode. In addition, modified electrode showed a good performance from the single cell operation.