Using different wet-ceramic processes and ceramic membrane technology
we have prepared various thin or thick ceramic membrane materials. The
thin film ceramic membranes, prepared using the gel-solution process,
have different material characteristics compared with the hulk materi
als, for example, higher ionic conductivity in the film plane than in
the perpendicular direction. A very sensitive humidity dependence of t
he conductivity has been observed in the thin film ceramic membranes.
Therefore, these membrane materials have a potential use for construct
ing new types of proton conducting electrolyte fuel cells and hydrogen
or humidity sensors.