| abstract |
The invention relates to a cation-conducting or proton-conducting ceramic membrane, a method for the production thereof and the use of the same. The inventive membrane represents a novel category of solid proton-conducting membranes, and is based on a porous and flexible ceramic membrane described in patent application PCT/EP98/05939. Said membrane is infiltrated by a proton- conducting substance, and is then dried and consolidated in such away that t he end result is an impermeable, cation-conducting or proton-conducting membran e. The proton-conducting substance is a hydroxysilylsulfonic acid or a hydroxysilylphosphonic acid which is integrated into an inorganic network, e.g. SiO2. The ceramic membrane thus remains flexible and can be used withou t a problem as a membrane in a fuel cell. |