• Title/Summary/Keyword: Ni disolution

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Preparation of Co-Ni Electrode by Precipitation Method and it's Application for Molten Carbonate Fuel Cell or Optimization of Co-Ni Electrode's Fabrication and it's Application for Molten Carbonate Fuel Cell (침전법을 활용한 Co-Ni 전극의 제조와 용융탄산염 연료전지의 그 적용)

  • Kim, S.Y.;Devianto, Hary;Ryu, B.H.;Hahm, H.C.;Han, J.;Yoon, S.P.;Nam, S.W.;Lim, T.H.;Lee, H.I.
    • New & Renewable Energy
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    • v.4 no.1
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    • pp.11-18
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    • 2008

  • 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$^{\circ}C$ in a $H_2/N_2$ 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.

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