An electrochemical or electric layer system, having at least two electrode layers and at least one ion-conducting layer disposed between two electrode layers. The ion-conducting layer has at least one ion-conducting solid electrolyte and at least one binder at grain boundaries of the at least one ion-conducting solid electrolyte for improving the ion conductivity over the grain boundaries and the adhesion of the layers.

Disclosed is a method of manufacturing a membrane electrode assembly with minimized interfacial resistance between an electrode and an electrolyte membrane. For instance, a catalyst admixture including a catalyst composite including a catalyst and a first binder, and a second binder may be applied to a porous substrate and the porous substrate may be impregnated with the second binder, thereby minimizing interfacial resistance between the electrode and the electrolyte membrane and reducing a thickness of the electrolyte membrane.

The present invention relates to a method for producing a membrane for a fuel cell or electrolytic cell, in which (i) a liquid coating composition, which contains a supported catalyst containing precious metal and also contains an ionomer, is applied to a polymer electrolyte membrane which contains an ionomer, the ionomer of the liquid coating composition and the ionomer of the polymer electrolyte membrane each being a copolymer which contains as monomer a fluoroethylene and a fluorovinyl ether containing a sulfonic acid group, (ii) the coated polymer electrolyte membrane is heated to a temperature in the range from 178° C. to 250° C.

Disclosed is a method of manufacturing a membrane electrode assembly with minimized interfacial resistance between an electrode and an electrolyte membrane. For instance, a catalyst admixture including a catalyst composite including a catalyst and a first binder, and a second binder may be applied to a porous substrate and the porous substrate may be impregnated with the second binder, thereby minimizing interfacial resistance between the electrode and the electrolyte membrane and reducing a thickness of the electrolyte membrane.

The present invention relates to a method for producing a membrane for a fuel cell or electrolytic cell, in which (i) a liquid coating composition, which contains a supported catalyst containing precious metal and also contains an ionomer, is applied to a polymer electrolyte membrane which contains an ionomer, the ionomer of the liquid coating composition and the ionomer of the polymer electrolyte membrane each being a copolymer which contains as monomer a fluoroethylene and a fluorovinyl ether containing a sulfonic acid group, (ii) the coated polymer electrolyte membrane is heated to a temperature in the range from 178? C. to 250? C.

Disclosed is a process for the manufacture of a catalyst-coated membrane-seal assembly, including: (i) providing a carrier material; (ii-i) forming a first layer, the first layer being formed by: (a) depositing a first catalyst component onto the carrier material such that the first catalyst component is deposited in discrete regions; (b) drying the first layer; (ii-ii) forming a second layer, the second layer being formed by: (a) depositing a first seal component, such that the first seal component provides a picture frame pattern having a continuous region and void regions, the continuous region including second seal component and the void regions being free from second seal component; (b) depositing a first ionomer component onto the first layer, such that the first ionomer component is deposited in discrete regions; and (c) drying the second layer.

Disclosed is a process for the manufacture of a catalyst-coated membrane-seal assembly, including: (i) providing a carrier material; (ii-i) forming a first layer, the first layer being formed by: (a) depositing a first catalyst component onto the carrier material such that the first catalyst component is deposited in discrete regions; (b) drying the first layer; (ii-ii) forming a second layer, the second layer being formed by: (a) depositing a first seal component, such that the first seal component provides a picture frame pattern having a continuous region and void regions, the continuous region including second seal component and the void regions being free from second seal component; (b) depositing a first ionomer component onto the first layer, such that the first ionomer component is deposited in discrete regions; and (c) drying the second layer.