Abstract: The present invention relates to a mold-in-place gasket forming assembly that includes a flange, a mold and an electromagnetic radiation filter for improved cycling. The present invention further relates to a mold-in-place gasketing process.

Abstract: A fuel cell, having improved sealing against leakage, includes a sealant disposed over the peripheral portions a membrane electrode assembly such that the cured sealant penetrates a gas diffusion layer of the membrane electrode assembly. The sealant is applied through liquid injection molding techniques to form cured sealant composition at the peripheral portions of the membrane electrode assembly. The sealant may be thermally cured at low temperatures, for example 130° C. or less, or may be cured at room temperature through the application of actinic radiation.

Abstract: A fuel cell, having improved sealing against leakage, includes a sealant disposed over the peripheral portions a membrane electrode assembly such that the cured sealant penetrates a gas diffusion layer of the membrane electrode assembly. The sealant is applied through liquid injection molding techniques to form cured sealant composition at the peripheral portions of the membrane electrode assembly. The sealant may be thermally cured at low temperatures, for example 130° C. or less, or may be cured at room temperature through the application of actinic radiation. The sealant may be a one-part or a two-part sealant. The sealant includes a polymerizable material, such as a polymerizable monomer, oligomer, telechelic polymer, functional polymer and combinations thereof functionalized with a group selected from epoxy, allyl, vinyl, (meth)acrylate, imide, amide, urethane and combinations thereof.

Abstract: A fuel cell, having improved sealing against leakage, includes a fuel cell component having a cured sealant, wherein the cured sealant includes a telechelic-functional polyisobutylene, an organhydrogenosilane crosslinker, a platinum catalyst and a photoinitiator. The fuel cell component may be a cathode flow field plate, an anode flow field plate, a resin frame, a gas diffusion layer, an anode catalyst layer, a cathode catalyst layer, a membrane electrolyte, a membrane-electrode-assembly frame, and combinations thereof.

Abstract: A method for forming a fuel cell component includes the steps of providing a two-part sealant having a first part comprising an initiator and a second part comprising a polymerizable material; applying the first part of the sealant to a substrate of a first fuel cell component; applying the second part of the sealant to a substrate of a second fuel cell component; juxtaposingly aligning the substrates of the first and second fuel cell components; and curing the sealant to bond the first and second fuel components to one and the other. The initiator may be an actinic radiation initiator, whereby the sealant is cured by actinic radiation. The polymerizable material may be a polymerizable monomer, oligomer, telechelic polymer, functional polymer and combinations thereof. Desirably, the functional group is epoxy, allyl, vinyl, acrylate, methacrylate, imide, amide, urethane and combinations thereof.