Systems for creating electrodes for polymer electrolyte membrane fuel cells include an XY stage having a heated vacuum table physically coupled to the XY stage. The vacuum table has a working face with a plurality of channels formed therein to communicate vacuum pressure from a port coupled to a vacuum source to the channels. A sheet of perforated heat-conductive material has staggered holes configured to evenly distribute the vacuum pressure from the channels through the perforated sheet. A heat-conductive wire mesh is placed over the perforated sheet, and has openings smaller than the staggered holes such that a membrane material placed on the wire mesh is not deformed by the vacuum pressure. A nanopipette or micropipette coupled to a pump is configured to deposit electrode ink onto an exposed surface of the membrane material as the controller device causes the XY stage to move the vacuum table to control deposition of the electrode ink onto the surface of the membrane material.

Disclosed are a polymer electrolyte membrane for fuel cells which has improved handling properties and mechanical strength by employing symmetric-type laminated composite films and a method for manufacturing the same.

The present specification relates to a method for manufacturing an electrode, an electrode manufactured by the same, an electrode structure including the electrode, a fuel cell or a metal-air secondary battery including the electrode, a battery module including the fuel cell or the metal-air secondary battery, and a composition for manufacturing an electrode.

The invention relates to a method for producing a catalyst coated membrane (19) for a fuel cell (10), wherein the catalyst coated membrane (19) has a membrane (11) and a catalyst layer (12, 13) of a catalytic material arranged on at least one of its flat sides, as well as a nonrectangular active area (20), which is restricted in one direction by two outer sides (30) opposite one another. The method comprises a continuous application of the catalytic material to a membrane material (33) while creating a constant coating width (B) such that an area (35) coated with the catalytic material corresponds to at least the active area (20). A provision is that the membrane material (33) be coated with the catalytic material such that a coating direction (D) has an angle with respect to the opposite outer sides (30) of the active area (20) that is not equal to 90° and not equal to 0°.

A method for producing a catalyst-coated membrane includes: producing and/or providing at least one first ink with a first ink composition, comprising supported catalyst particles, a proton-conductive ionomer, and a dispersing agent, the content of the supported catalyst particles in the composition remaining below the content of the proton-conductive ionomer; unwinding a web-shaped proton-conductive membrane material which is provided on a roll; applying at least one layer of the first ink onto at least one section of the membrane material using a first application tool; and sputtering a catalyst powder consisting of or comprising catalyst particles onto a surface of the outermost ink layer facing away from the membrane material using a sputtering device.

The present disclosure provides a method for manufacturing a membrane electrode assembly for a fuel cell in which a transfer failure is suppressed. The present disclosure relates to a method for manufacturing a membrane electrode assembly for a fuel cell, which comprises intermittently applying a catalyst ink on a substrate sheet and drying the catalyst ink to form a catalyst layer on the substrate sheet, and transferring the catalyst layer from the substrate sheet onto an electrolyte membrane. The catalyst ink contains catalyst particles, an ionomer, an alcohol, and water, and a water content in the catalyst ink is 57% to 61% by weight of a total weight of the catalyst ink.

Disclosed are a manufacturing method of a membrane electrode assembly capable of increasing the interfacial adhesion between a polymer electrolyte membrane and a catalyst layer, improving substance delivery and performance, and enhancing hydrogen permeation resistance or oxygen permeability; a membrane electrode assembly manufactured thereby; and a fuel cell comprising the membrane electrode assembly. The manufacturing method of the present invention comprises the steps of: adding a catalyst and a first ionomer to a solvent and dispersing the same, thereby producing a dispersed mixture; adding a second ionomer to the dispersed mixture, thereby producing a coating composition; and applying the coating composition directly onto at least one side of the polymer electrolyte membrane.

The present invention provides a catalysed ion-conducting membrane comprising an ion-conducting membrane, an electrocatalyst layer having two opposing faces, and a layer A comprising an ion-conducting material and a carbon containing material. Also provided are methods for preparing the catalysed ion-conducting membrane.

The present invention provides a method of preparing a catalyst material which comprises electrocatalyst particles, a support material, and graphitic carbon nitride, wherein the method comprises applying graphitic carbon nitride to a catalyst material precursor. Also provided is a catalyst material comprising graphitic carbon nitride.

A proton exchange membrane fuel cell includes an anode catalyst layer, a cathode catalyst layer, a proton exchange membrane separating the anode catalyst layer from the cathode catalyst layer, an oxygen inlet configured to supply oxygen to the cathode catalyst layer, and a hydrogen inlet separate from the oxygen inlet and configured to supply hydrogen to the anode catalyst layer. The fuel cell is operable to convert the hydrogen from the hydrogen inlet to hydrogen ions at the anode catalyst layer and to produce an H2O byproduct at the cathode catalyst layer where the oxygen reacts with the hydrogen ions. The fuel cell includes a water outlet for the H2O byproduct that is separate from the oxygen inlet.