| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a catalyst material for a fuel cell excellent both in activity and stability. <P>SOLUTION: A composition of the material contains catalyst particles substantially expressed in the following formula (1); AT<SB>x</SB>N<SB>u</SB>, provided, the above A is either Pt, or Pt and at least one kind selected from a group of rare metal elements consisting of Ru, Pd, Au and Ag, the above T is at least on kind selected from a group of elements consisting of Fe, Co, Ni, Sn, Mn, Cr, V, Ti, Mo, Nb, Zr, W, Ta, and Hf, and the atom ratios x and u are expressed as 0≤x≤4, and 0.005≤u≤1, respectively. <P>COPYRIGHT: (C)2004,JPO |
