A method to produce a gas diffusion layer and a fuel cell comprising a gas diffusion layer

P. Boillat; F.N. Büchi; Lorenz Gubler; Antoni Forner Cuenca; Celestino Padeste

A method to produce a gas diffusion layer and a fuel cell comprising a gas diffusion layer

P. Boillat (Inventor), F.N. Büchi (Inventor), Lorenz Gubler (Inventor), Antoni Forner Cuenca (Inventor), Celestino Padeste (Inventor)

Membrane Materials and Processes

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Abstract

The present invention discloses a method of manufacturing gas diffusion layers (GDL) with a defined pattern of hydrophobic and hydrophilic regions. The method to produce electrically conductive porous materials with distributed wettability comprises the steps of: a) Coating the external and internal surfaces of a porous base material made of carbon fiber or Titanium with Fluoroethylene-Propylene (FEP) and/or perfluoroalkoxy (PFA) and/or Ethylene-Tetrafluoroethylene (ETFE) or any other hydrophobic polymer; b) Exposing the coated material to irradiation through a blocking mask such that only parts of the coated porous material are exposed; c) Immersing the previously exposed material in a monomer solution and heating to a temperature higher than 45°C, resulting in the graft co-polymerization of monomers on the FEP layer.

Original language	English
Patent number	WO2016037833
Filing date	21/08/15
Publication status	Published - 17 Mar 2016

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title = "A method to produce a gas diffusion layer and a fuel cell comprising a gas diffusion layer",

abstract = "The present invention discloses a method of manufacturing gas diffusion layers (GDL) with a defined pattern of hydrophobic and hydrophilic regions. The method to produce electrically conductive porous materials with distributed wettability comprises the steps of: a) Coating the external and internal surfaces of a porous base material made of carbon fiber or Titanium with Fluoroethylene-Propylene (FEP) and/or perfluoroalkoxy (PFA) and/or Ethylene-Tetrafluoroethylene (ETFE) or any other hydrophobic polymer; b) Exposing the coated material to irradiation through a blocking mask such that only parts of the coated porous material are exposed; c) Immersing the previously exposed material in a monomer solution and heating to a temperature higher than 45°C, resulting in the graft co-polymerization of monomers on the FEP layer.",

author = "P. Boillat and F.N. B{\"u}chi and Lorenz Gubler and {Forner Cuenca}, Antoni and Celestino Padeste",

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T1 - A method to produce a gas diffusion layer and a fuel cell comprising a gas diffusion layer

AU - Boillat, P.

AU - Büchi, F.N.

AU - Gubler, Lorenz

AU - Forner Cuenca, Antoni

AU - Padeste, Celestino

PY - 2016/3/17

Y1 - 2016/3/17

N2 - The present invention discloses a method of manufacturing gas diffusion layers (GDL) with a defined pattern of hydrophobic and hydrophilic regions. The method to produce electrically conductive porous materials with distributed wettability comprises the steps of: a) Coating the external and internal surfaces of a porous base material made of carbon fiber or Titanium with Fluoroethylene-Propylene (FEP) and/or perfluoroalkoxy (PFA) and/or Ethylene-Tetrafluoroethylene (ETFE) or any other hydrophobic polymer; b) Exposing the coated material to irradiation through a blocking mask such that only parts of the coated porous material are exposed; c) Immersing the previously exposed material in a monomer solution and heating to a temperature higher than 45°C, resulting in the graft co-polymerization of monomers on the FEP layer.

AB - The present invention discloses a method of manufacturing gas diffusion layers (GDL) with a defined pattern of hydrophobic and hydrophilic regions. The method to produce electrically conductive porous materials with distributed wettability comprises the steps of: a) Coating the external and internal surfaces of a porous base material made of carbon fiber or Titanium with Fluoroethylene-Propylene (FEP) and/or perfluoroalkoxy (PFA) and/or Ethylene-Tetrafluoroethylene (ETFE) or any other hydrophobic polymer; b) Exposing the coated material to irradiation through a blocking mask such that only parts of the coated porous material are exposed; c) Immersing the previously exposed material in a monomer solution and heating to a temperature higher than 45°C, resulting in the graft co-polymerization of monomers on the FEP layer.

M3 - Patent publication

M1 - WO2016037833

Y2 - 2015/08/21

ER -

A method to produce a gas diffusion layer and a fuel cell comprising a gas diffusion layer

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