Abstract: A fuel cell stack is housed within a fuel cell stack enclosure. Air is used to ventilate the fuel cell stack enclosure. The air may be pulled from an air stream used to cool a high voltage battery. The air may also be pulled from a vehicle compartment such as a vehicle trunk or vehicle cabin. Filters are used to remove particulate matter from the air.

Abstract: A modular fuel cell power system includes a coolant source, a reactant source and a plurality of fuel cell modules. Each of the fuel cell modules includes a fuel cell stack and a fluid distribution plant in fluid communication with the reactant source, coolant source and fuel cell stack. The fluid distribution plant controls the flow of reactant between the reactant source and fuel cell stack. The fuel cell stacks are configured to be selectively electrically connected.

Abstract: In at least one embodiment, a fuel cell is provided comprising a positive electrode including a first gas diffusion layer and a first catalyst layer, a negative electrode including a second gas diffusion layer and a second catalyst layer, a proton exchange membrane (PEM) disposed between the positive and negative electrodes, and a microporous layer of carbon and binder disposed between at least one of the first gas diffusion layer and the first catalyst layer and the second gas diffusion layer and the second catalyst layer. The microporous layer may have defined therein a plurality of pores with a diameter of 0.05 to 2.0 ?m and a plurality of bores having a diameter of 1 to 100 ?m. The bores may be laser perforated and comprise from 0.1 to 5 percent of a total porosity of the microporous layer.

Abstract: A modular fuel cell power system includes a coolant source, a reactant source and a plurality of fuel cell modules. Each of the fuel cell modules includes a fuel cell stack and a fluid distribution plant in fluid communication with the reactant source, coolant source and fuel cell stack. The fluid distribution plant controls the flow of reactant between the reactant source and fuel cell stack. The fuel cell stacks are configured to be selectively electrically connected.

Abstract: In at least one embodiment, a fuel cell is provided comprising a positive electrode including a first gas diffusion layer and a first catalyst layer, a negative electrode including a second gas diffusion layer and a second catalyst layer, a proton exchange membrane (PEM) disposed between the positive and negative electrodes, and a microporous layer of carbon and binder disposed between at least one of the first gas diffusion layer and the first catalyst layer and the second gas diffusion layer and the second catalyst layer. The microporous layer may have defined therein a plurality of pores with a diameter of 0.05 to 2.0 ?m and a plurality of bores having a diameter of 1 to 100 ?m. The bores may be laser perforated and comprise from 0.1 to 5 percent of a total porosity of the microporous layer.

Abstract: A modular fuel cell power system includes a coolant source, a reactant source and a plurality of fuel cell modules. Each of the fuel cell modules includes a fuel cell stack and a fluid distribution plant in fluid communication with the reactant source, coolant source and fuel cell stack. The fluid distribution plant controls the flow of reactant between the reactant source and fuel cell stack. The fuel cell stacks are configured to be selectively electrically connected.

Abstract: A fuel cell stack is housed within a fuel cell stack enclosure. Air is used to ventilate the fuel cell stack enclosure. The air may be pulled from an air stream used to cool a high voltage battery. The air may also be pulled from a vehicle compartment such as a vehicle trunk or vehicle cabin. Filters are used to remove particulate matter from the air.