Ionic electrolyte membrane structure method for its production and solid oxide fuel cell making use of ionic electrolyte membrane structure

A method for producing an ionic electrolyte membrane structure which transmits ions only, comprising:

• a substrate having a plurality of pores which have been made through the substrate in the thickness direction thereof;
• and
• a plurality of multi-layer membranes each comprising an ion conducting layer formed of an ion conductive material and an ion non-conducting layer formed of an ion non-conductive material which have alternately been formed in laminae a plurality of times on each inner wall surface of the pores of the substrate in such a way that the multi-layer membranes fill up the pores completely;
• the ions only being transmitted in the through direction by way of the multi-layer membranes provided on the inner wall surfaces of the pores,
• the method comprising:
• on each inner wall surface of pores of a substrate having a plurality of pores which have been made through the substrate in the thickness direction thereof, alternately forming in laminae a plurality of times an ion conducting layer formed of an ion conductive material and an ion non-conductive layer formed of an ion non-conductive material, by atomic layer deposition to form a plurality of multi-layer membranes which fill up the pores completely.