| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method for producing an apatite ceramic capable of improving ion conductivity, and imparting chemical stability bearable to long-term use, and to provide a fuel cell using the apatite ceramic. <P>SOLUTION: In this method for producing an apatite ceramic, when synthesizing an apatite ceramic comprising a lanthanoid silicate by reacting a raw material containing lanthanoid with Si (silicon), at least either of Al and Mg is doped so as to generate an apatite ceramic having following composition formula (1), and a transition metal is added thereto. (1-α) äLn<SB POS="POST">9.333+x</SB>(Si<SB POS="POST">6-y</SB>T<SP POS="POST">u+</SP><SB POS="POST">y</SB>)O<SB POS="POST">26+1.5x-(2-0.5u)y</SB>}-α(MO<SB POS="POST">γ</SB>)(1) (wherein, Ln; lanthanoid, T; at least either element of Al and Mg, M; a transition metal, 0.3<x<0.867, 0.1≤y≤0.4, 0.002≤α<0.05, γ; a variable determined corresponding to the valence number of the transition metal M). <P>COPYRIGHT: (C)2013,JPO&INPIT |
