| abstract |
(57) [Summary] [PROBLEMS] To produce a novel composite form of ceramic particle powder which has never existed before. A cathode for a molten carbonate fuel cell is provided with N It is porous mainly composed of iO, and the surface of NiO is Fe- It is formed to have a structure covered with a solid solution layer containing Mg-Ni-O. In the present cathode, the solid solution layer is selectively formed only on the surface of NiO, so that the elution of NiO can be effectively suppressed with a small amount, and the solid solution layer is Fe-rich with respect to Mg. Because of this, Fe reacts with Li in the molten carbonate to form a very stable Li-Fe oxide in the molten carbonate, thereby stably maintaining the surface microstructure of the electrode, A small amount of MgFe 2 O 4 contributes to effective NiO suppression. |