摘要:
A fuel cell comprising: a first layer comprising a first ionomer and an additive, the additive comprising a metal oxide comprising an oxide at least one of of Ce, Mn, V, Pt, Ru, Zr, Ni, Cr, W, Co, Mo, or Sn, and wherein the additive is present in at least 0.1 weight percent of the ionomer is disclosed as one embodiment of the invention, and performance and durability are advantaged wherein one or all of the metal oxide consists essentially nanoparticles.
摘要:
A fuel cell comprising: a first layer comprising a first ionomer and an additive, the additive comprising a metal oxide comprising an oxide at least one of of Ce, Mn, V, Pt, Ru, Zr, Ni, Cr, W, Co, Mo, or Sn, and wherein the additive is present in at least 0.1 weight percent of the ionomer is disclosed as one embodiment of the invention, and performance and durability are advantaged wherein one or all of the metal oxide consists essentially nanoparticles.
摘要:
In at least one embodiment, the present invention provides a hydrophilic electrically conductive fluid distribution plate and a method of making, and system for using, the hydrophilic electrically conductive fluid distribution plate. In at least one embodiment, the plate comprises a plate body defining a set of fluid flow channels configured to distribute flow of a fluid across at least one side of the plate, and a composite conductive coating having a water contact angle of less than 40° adhered to the plate body. In at least one embodiment, the composite coating comprises a polymeric conductive layer adhered to the plate body having an exterior surface, and a particulate carbon layer adhered to the exterior surface of the polymeric conductive layer.
摘要:
A method for making hollow metal tubes includes a step combining a polyphenylene sulfide-containing resin with a water soluble carrier resin to form a resinous mixture. The resinous mixture is then extruded to form an extruded resinous mixture. The extruded resinous mixture includes polyphenylene sulfide-containing fibers within the carrier resin. The extruded resinous mixture is contacted (i.e., washed) with water to separate the polyphenylene sulfide-containing fibers from the carrier resin. The polyphenylene sulfide-containing fibers are then formed into a membrane.
摘要:
In at least one embodiment, the present invention provides an electrically conductive fluid distribution plate and a method of making, and system for using, the electrically conductive fluid distribution plate. In at least one embodiment, the plate comprises a plate body defining a set of fluid flow channels configured to distribute flow of a fluid across at least one side of the plate, and a polymeric porous conductive layer proximate the plate body, with the porous conductive layer having a porosity sufficient to result in a water contact angle of the surface of less than 40°.
摘要:
Fuel-cell membrane-subgasket assemblies may include an electrolyte membrane and a coated subgasket overlying the electrolyte membrane around a perimeter of the electrolyte membrane so as to define an active area inside the perimeter. The coated subgasket may comprise a subgasket body formed from a subgasket material. At least one side of the coated subgasket includes a subgasket coating layer containing or formed from a coating material such as metals, ceramics, polymers, polymer composites, or other hard coatings. Fuel-cell assemblies may include gas diffusion media, a bipolar plate, and a fuel-cell membrane-subgasket assembly having a coated subgasket. Fuel-cell stacks may include clamping plates, unipolar endplates, and a plurality of individual fuel-cell assemblies, at least one of which includes a fuel-cell membrane-subgasket assembly having a coated subgasket.
摘要:
A fuel cell component includes a first fluid distribution layer, a second fluid distribution layer, a cap layer, a third fluid distribution layer, and a pair of fluid diffusion medium layers. The individual layers are polymeric, mechanically integrated, and formed from a radiation-sensitive material. The first fluid distribution layer, the second fluid distribution layer, the cap layer, the third fluid distribution layer, and the pair of fluid diffusion medium layers are coated with an electrically conductive material. A pair of the fuel cell components may be arranged in a stack with a membrane electrode assembly therebetween to form a fuel cell.
摘要:
A separator plate for a fuel cell is provided, including a substrate having a radiation-cured first flow field layer disposed thereon. A method for fabricating the separator plate is also provided. The method includes the steps of providing a substrate; applying a first radiation-sensitive material to the substrate; placing a first mask between a first radiation source and the first radiation-sensitive material, the first mask having a plurality of substantially radiation-transparent apertures; and exposing the first radiation-sensitive material to a plurality of first radiation beams to form a radiation-cured first flow field layer adjacent the substrate. A fuel cell having the separator plate is also provided.
摘要:
An interlockable bead seal for a bipolar plate is provided. The interlockable bead seal includes a first elongate bead formed on a first plate and a second elongate bead formed on a second plate. The first elongate bead has a sealing surface and the second elongate bead has a trough. An interlockable bipolar plate having the interlockable bead seals, and a fuel cell stack formed from a plurality of the interlockable bipolar plates, are also provided. A lateral slippage between components of the fuel cell stack is militated against by the interlockable bipolar plates.
摘要:
A bipolar plate assembly for a fuel cell is provided. The bipolar plate assembly includes a cathode plate disposed adjacent an anode plate, the cathode and anode plates formed having a first thickness of a low contact resistance, high corrosion resistance material by a deposition process. The first and second unipolar plates are formed on a removable substrate, and a first perimeter of the first unipolar plate is welded to a second perimeter of the second unipolar plate to form a hermetically sealed coolant flow path. A method for forming the bipolar plate assembly is also described.