Ceramic membrane foils made by Creavis Technology and Innovations are a new kind of membranes. The ceramic membrane foils are already marketed under the trade name CREAFILTER(R). They combine in a favorable way the characteristics of flexible polymeric membranes and ceramic membranes. CREAFILTER(R) ceramic membrane foils are suitable for a lot of applications in the filtration market as well as for power applications. CREAFILTER(R) proton conducting membranes meet the requirements of PEM fuel cells and CREAFILTER(R) battery separators increase the safety of Li batteries.