Materials research for advanced solid state fuel cells
The investigations conducted involved: - the preparation of tin-mordenite; - the manufacture of polymer bonded membranes thereof; - the preparation and testing of membrane electrode systems and - the development of conductive polymers for fuel cell end plates. Tin(IV)mordenite was prepared from H-mordenite and tin(II)chloride for membrane manufacture. A membrane preparation technique was established, involving film casting from suspensions of zeolite powder and fluoroelastomer. Membranes obtained from zeolite of the 3A-type and fluoroelastomer are gas-tight and highly mechanically stable. Due to the needle-like crystal structure of the mordenite, membranes cast from suspensions of this material and elastomer are much more difficult to handle. However, fairly stable and gas-tight membranes were prepared. Several membranes were equipped with electrodes. These M&Es were tested for their dc-conductivity and as fuel cells. The results of the experiments are presented in detail. Conductive polymers were also investigated. The most suitable polymers for fuel cells seem to be fluorinated elastomers. The temperature stability and chemical resistance of these materials is similar to Teflon, but handling is easier.
Bibliographic Reference: EUR 13134 EN (1991) 30 pp., MF, ECU 4, blow-up copy ECU 5
Record Number: 199110212 / Last updated on: 1994-12-02
Original language: en
Available languages: en