| 摘要 |
PURPOSE:To produce a joined body of an electrode catalyst and an ion exchange membrane permitting water electrolysis at a low voltage and having durability by press sticking and joining the alloy particles of the specific compsn. consisting of Ni or Co, Al, etc. and a IV group metal of periodic table. CONSTITUTION:The alloy particles having the prescribed compsn. consisting of the three components X, Y, Z; the component X=Ni and/or Co, the component Y=Al, Zn, Si or Mg, and the component Z= a IV group metal or periodic table, and press stuck on an ion membrane, and at least mainly a part of the metal of the above-mentioned component Y is eluted off by an aq. caustic alkali soln. A joined body of an ion exchange membrane and an electrode wherein the porous particles of the electrode active metal consisting of the alloy of having the compsn. of the above-mentioned three components X, Y, Z in the range enclosed with the points A, B, C, D and E, more preferably in the range of F, G, H and E in the compsn. diagram are joined as an anode to the ion membrane and which exhibits a low oxygen overvoltage in water electrolysis and has durability is thus obtd. |
