| 摘要 |
PURPOSE:To reduce the amt. of the Pt to be used and to improve electrode catalyst activity by adding a specific ratio of Pt to an amorphous alloy consisting of specific ratios of >=1 kinds of Ni and Co and >=1 kinds of Ti and Zr or Nb and Ta. CONSTITUTION:The amorphous alloy consists, by atomic %, 0.5-10 Pt, 20-80>=1 kinds of Ti and Zr, 20-70>=1 kinds of Nb and Ta, at need, Ru<=10>=1 kinds among Rh, Pd, Ir, Tl, Si, Ge, Sn, Pb, Bi (where, the ratio is equal to the ratio of Pt when Pt<=10) and the balance <=10 Ni or Co. <=70>=1 kinds of Nb and Ta and 20-80>=1 kinds of Ti and Zr (contg. >=1 kinds of the above- mentioned Nb and Ta) are also a good alternative with respect to the Ti, Zr, Nb and Ta of the above-mentioned compsn. This alloy has the extremely high electrode catalyst activity to the electrochemical oxidation of the titled cell while the amt. of the costly Pt to be added is extremely low; in addition, the alloy has the high corrosion resistance under electrolytic conditions. |
