Abstract: An active test fuel cell characterizes and qualifies cell-internal components to establish technical data on the cell-internal components to be tested at low assembly costs, at a low error rate and with a high degree of reproducibility of the measuring results. The test fuel cell includes two housing plates. One of the housing plates is coupled to a piston/cylinder unit whose piston acts on a pressure element which in turn applies a load to the cell-internal components being tested.

Abstract: The invention relates to a membrane for the separation of material mixtures by the principle of vapor permeation or pervaporation, in particular for the dewatering of organic solvents, comprising at least one support layer and at least one material-selective separation layer located thereon, and a method for production of such a membrane. The material-selective separating layer is made from polyvinyl alcohol, containing at least one metallic element and/or a derivative thereof. The method includes the addition of polyvinyl alcohol to a solvent, adding an organometallic compound to the solvent/polyvinyl alcohol mixture, and then applying the solvent/polyvinyl alcohol/organometallic compound mixture to the support layer as the material-selective separating layer.

Abstract: An active test fuel cell characterizes and qualifies cell-internal components to establish technical data on the cell-internal components to be tested at low assembly costs, at a low error rate and with a high degree of reproducibility of the measuring results. The test fuel cell includes two housing plates. One of the housing plates is coupled to a piston/cylinder unit whose piston acts on a pressure element which in turn applies a load to cell-internal component being tested.

Abstract: The invention relates to a membrane for the separation of material mixtures by the principle of vapor permeation or pervaporation, in particular for the dewatering of organic solvents, comprising at least one support layer and at least one material-selective separation layer located thereon, and a method for production of such a membrane. The material-selective separating layer is made from polyvinyl alcohol, containing at least one metallic element and/or a derivative thereof. The method includes the addition of polyvinyl alcohol to a solvent, adding an organometallic compound to the solvent/polyvinyl alcohol mixture, and then applying the solvent/polyvinyl alcohol/organometallic compound mixture to the support layer as the material-selective separating layer.