Method for the dry production of a membrane electrode unit, membrane electrode unit, and roller arrangement

摘要

A method for the dry production of a membrane-electrode unit includes assembling a layered configuration including a centrally positioned membrane produced by extrusion and pre-dried at a temperature between 80° C. and 100° C. for 15 min to 30 min, a substrate-electrode unit on each side of the membrane having an electrode layer applied to a substrate, an optional frame around each substrate-electrode unit for fixing the substrate-electrode unit, and two separating films on outer sides. The configuration is pressed together between two laminating rollers so that a pressure connection is produced at least between the membrane and the electrode layers. A short production time is achieved because it is not necessary to keep the membrane moist at high temperatures under pressure. A membrane electrode unit and a roller configuration are also provided.

主权项

1. A method for the dry production of a membrane electrode unit for an electrolysis process, the method comprising the following steps:
drying an extruded membrane having upper and lower surfaces at a temperature between 80° C. and 100° C. for a period of time from 15 min to 30 min; assembling a layered configuration comprising:
a centrally positioned, dried, extruded membrane;two substrate electrode units each disposed on a respective surface of the membrane and each having a substrate and an electrode layer applied to the substrate; andtwo separating films, each disposed on an outer surface of a respective one of the substrate electrode units; and pressing the layered configuration together between two oppositely positioned laminating rollers to produce a pressure connection at least between the membrane and the electrode layers.