Widex A/s

Ird Fuel Cells A/s

Ewii Fuel Cells A/s

Jacob Lindner Bonde

Kasper Vestentoft

Jan Harry Hales

Torsten Lund-Olesen

Leif Hojslet Christensen

Oskar Tynelius

Leif Hoejslet Christensen

Boris Valnert

Michael Frydendal Larssen

Joergen Schjerning Lundsgaard

Madeleine Odgaard

Visti Andresen

Mads Lundstrom

The present invention relates to a direct alcohol fuel cell comprising a housing containing a proton exchange membrane (PEM) separating an anode section from a cathode section, which anode section and which cathode section are contained in the housing, the cathode section comprising a cathode collection element electrically connected to a cathode catalyst, which cathode catalyst is in diffusive communication with a gaseous oxidant, and the anode section comprising an anode collection element electrically connected to an anode catalyst, and a pervaporation membrane located at a spacing distance from the PEM, which pervaporation membrane provides diffusive communication between the anode catalyst and a fuel supply, wherein the housing comprises one or more venting holes providing fluid communication between the anode section and the ambient environment, which venting hole has or which venting holes have a largest dimension in the range of 25 μm to 300 μm, the venting hole being located within the spacing distance. The fuel cell is suited for a microelectronic device.

Direct alcohol fuel cell

The present invention relates to a direct alcohol fuel cell (DAFC) comprising an anode terminal electrically connected to an anode catalyst in fluid communication with a fuel supply; a cathode catalyst in fluid communication with a gaseous oxidant; an electrically conducting cathode plate having a collecting element with evaporation holes, a bendable segment and a terminal site, which collecting element is electrically connected to the cathode catalyst; and a housing containing the collecting element, and a proton exchange membrane (PEM) between the anode catalyst and the cathode catalyst.

The present invention relates to a direct alcohol fuel cell comprising a housing containing a proton exchange membrane (PEM) separating an anode section from a cathode section, which anode section and which cathode section are contained in the housing, the cathode section comprising a cathode collection element having one or more ventilation holes, which cathode collection element is electrically connected to a cathode catalyst, which cathode catalyst is in diffusive communication with a gaseous oxidant, and the anode section comprising an anode collection element electrically connected to an anode catalyst, the DAFC comprising an oleophobic filter covering the ventilation hole(s). The oleophobic filter may be held in place using any appropriate means as desired. The fuel cell is suited for a microelectronic device.

A direct alcohol fuel cell having a proton exchange membrane (PEM) separating an anode section from a cathode section, which cathode section contains a cathode collection element electrically connected to a cathode catalyst, the cathode catalyst being in diffusive communication with a gaseous oxidant, and which anode section comprises an anode collection element electrically connected to an anode catalyst. The anode catalyst is in diffusive communication with a fuel supply. The PEM is structured to have a bottom and walls extending from the bottom to a containment distance into the cathode section, and the cathode catalyst is located within the containment distance from the bottom. The fuel cell is suited for a microelectronic device.

A direct alcohol fuel cell having an inner housing, and a proton exchange membrane separating an anode section from a cathode section. The anode section contains an anode collection element electrically connected to an anode catalyst that is in diffusive communication with a fuel supply. The cathode section contains a cathode collection element having one or more ventilation holes is electrically connected to a cathode catalyst. An oleophobic filter and/or an anion-exchange membrane is provided, which cathode catalyst via the one or more ventilation holes and the oleophobic filter and/or the anion-exchange membrane is in diffusive communication with a gaseous oxidant. The inner housing has a bottom and walls extending from the bottom to contain the anode section, the PEM and the cathode section, the bottom and/or the walls having holes allowing fluid communication from a fuel supply to the anode section. The fuel cell is suited for microelectronic devices.

Methods and systems for operation of direct methanol fuel cell (DFMC) systems with enhanced flexibility within a wide range of electrical loads as well as no external load are provided. With these methods and systems, the fuel cell operates at low power in a non shut-down state in a fully controlled manner thus allowing the fuel cell to withstand frost conditions and to maintain optimal ancillary battery capacity.

Growing community of inventors

Skarup, Denmark

Jacob Lindner Bonde