| 摘要 |
PURPOSE: To develope an anode of a high temp. solid electrolyte type steam electrolyzer free from stripping at the time of electrolyzing by Pt plating on the surface of an yttria stabilization type zirconia and laminating a porous body of an electron conductive perovskite type oxide thereon. CONSTITUTION: A thin plate of the yttria stabilization type zirconia is activated by dipping into acetone to degrease, dipping into hydrofluoric acid to etch, successively masking the surface with a silicone resin to form an electrode surface and dipping into a SnCl2 aq. solution and further into a PdCl2 aq. solution. Next, a Pt plated layer 1μm in thickness is formed on the surface by electroless plating method and a slurry of the electron conductive perovskite type oxide such as La1-x Srx MnO3 is applied on the surface, which is fired in the air after dried. The anodic electrode for high temp. solid electrolyte steam electrolysis for generating high purity gaseous hydrogen is produced by using the coated thin plate as the anode, keeping at 900-130 deg.C, supplying steam and electrolyzing.
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