摘要:
A bipolar plate for a fuel cell is provided that includes a pair of unipolar plates having a separator plate disposed therebetween. One of the unipolar plates is produced from a porous material to minimize cathode transport resistance at high current density. A fuel cell stack including a fuel cell and the bipolar plate is also provided.
摘要:
A barrier layer for a fuel cell assembly is disclosed, the barrier layer having a thermally insulating layer having a first surface and a second surface, and an electrically conducting layer formed on the first surface of the thermally insulating layer. The thermally insulating layer may include a plurality of apertures formed therethrough, and the electrically conducting layer may be formed on a second surface of the thermally insulating layer and on the walls of the thermally insulating layer forming the apertures.
摘要:
A bipolar plate for a fuel cell is provided that includes a pair of unipolar plates having a separator plate disposed therebetween. One of the unipolar plates is produced from a porous material to minimize cathode transport resistance at high current density. A fuel cell stack including a fuel cell and the bipolar plate is also provided.
摘要:
A barrier layer for a fuel cell assembly is disclosed, the barrier layer having a thermally insulating layer having a first surface and a second surface, and an electrically conducting layer formed on the first surface of the thermally insulating layer. The thermally insulating layer may include a plurality of apertures formed therethrough, and the electrically conducting layer may be formed on a second surface of the thermally insulating layer and on the walls of the thermally insulating layer forming the apertures.
摘要:
A fuel cell system is provided including a fuel cell stack having a first end and second end, the stack comprising at least one fuel cell, a first end unit disposed adjacent the first end of the fuel cell stack, a second end unit disposed adjacent the second end of the fuel cell stack, and a compression retention system. The compression retention system includes at least one generally planar strip forming at least one bend, wherein the at least one strip extends from the first end unit to the second end unit of the fuel cell system. The at least one bend of the planar strip can form at least one serpentine shape.
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:
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.