| 摘要 |
PURPOSE:To obtain hydrogen with low voltage and good efficiency by providing porous microruggedness having no electrode activity on the respective surfaces of an ion exchange membrane segmenting the anode and cathode of an electrolytic cell for electrolysis of water. CONSTITUTION:A porous layer of oxide, hydroxide, nitride or carbide of Ti, Zr, Nb, Ta, V, Mn or the like alone or a mixture of >=2 kinds of these having no electrode activity is provided on one surface of an ion exchange membrane. This layer has about 0.01-2,000mu average pore sizes and about 10-95% porosities. On the other hand, micrcruggedness of about 10<3>-10<15> pieces per cm<2> of the membrane surface of average about 0.01-50mu depth or height from the membrane surface is provided on the other membrane surface. The surface and sectional shapes of the ruggedness can be properly selected, and the ruggedness is formed by press-sticking particle layers of iron or the like onto the membrane surface under heating and burying part thereof into the membrane then removing the particle layer other than by a sandblasting method, etc. |
