An air cleaner is provided in a cathode system device of a fuel cell system that is mounted in a fuel cell vehicle. The air cleaner comprises a casing having an internal space through which air flows, and an air filter accommodated in the internal space. The air filter has a flat plate shape, and is arranged on an outer side of a fuel cell stack in a horizontal direction, and in a state of being inclined with respect to the horizontal direction.

A method is described for generating carbon-neutral electricity using purified hydrogen as an energy source. A recyclable LOHC is provided to the process for reversible dehydrogenation. Hydrogen generated by dehydrogenation is purified and electrochemically converted to electricity. Heat for maintaining the dehydrogenation reaction temperature is derived from combustion of a portion of the liquid products from dehydrogenation, the portion combusted being less than or equal to the portion of carbon-neutral component included in the recyclable LOHC.

A fuel cell assembly includes a fuel cell stack. A vehicle includes a propulsion system and the fuel cell assembly configured to provide power to the propulsion system in at least one mode. The fuel cell assembly also includes an air compressor and an air pump spaced from the air compressor. The air compressor includes an on position in which the air compressor is configured to supply air to the fuel cell stack and an off position in which the air compressor does not supply air to the fuel cell stack. The air compressor also includes a bearing configured to be levitated via air. The air pump is configured to supply air to the fuel cell stack when the air compressor is in the off position and configured to supply air to the bearing when the air compressor is in the on position.

Provided are a hydrogen recycle system and a hydrogen recycle method, whereby hydrogen can be purified to high purity at high yield from a gas, said gas being exhausted from a nitride compound production device, and recycled. The hydrogen recycle system comprises an exhaust gas supply path supplying a gas exhausted from a nitride compound production device, a hydrogen recycle means and a hydrogen supply path. The hydrogen recycle means of the hydrogen recycle system is characterized by comprising: a plasma reaction vessel that defines at least a part of a discharge space; a hydrogen separation membrane that divides the discharge space from a hydrogen flow path communicated with the hydrogen supply path, defines at least a part of the discharge space by one surface thereof and also defines at least a part of the hydrogen flow path by the other surface thereof; an electrode that is disposed outside the discharge space; and an adsorbent that is filled in the discharge space and adsorbs the supplied exhaust gas.

Compositions, devices, and methods for sensing free radicals such as hydroxyl radicals, involving cerium oxide nanoparticles on a carbon-based substrate, are described.

In one or more embodiments, a battery may include one or more cells and one or more enclosures that respectively enclose the one or more cells. For example, at least a portion of each enclosure of the one or more enclosures may include a zeolite material that is configured to permit first molecules associated with a first diameter to exit the enclosure and configured to inhibit second molecules associated with a second diameter, greater than the first diameter, from entering the enclosure. In one instance, the first molecules may include CO.sub.2 molecules. In another instance, the second molecules may include H.sub.2O molecules. In one or more embodiments, the zeolite material may be a DDR-type zeolite material. For example, the DDR-type zeolite material may be applied on a porous α-alumina substrate. In one or more embodiments, the battery may provide power to one or more components of an information handling system.

A fuel processing system and method for a sulfur bearing fuel include a hydrodesulfurization reactor followed by an adsorbent bed for removing sulfur or sulfur containing species from the fuel. In certain embodiments, the adsorbent bed is a ZnO bed. In another embodiment, a fuel processing system and method for a sulfur bearing fuel include a steam reformer, a hydrodesulfurization reactor, and an adsorbent bed.

Provided is a transportation device which is capable of continuously travelling without being supplied with hydrogen from the outside. According to the present invention, a transportation device is provided with an ammonia storage means, a hydrogen production device, a fuel cell, a motor, a battery and a control unit. The hydrogen production device produces hydrogen by decomposing ammonia; and the fuel cell is supplied with hydrogen from the hydrogen production device and generates electric power. The motor operates by being supplied with some or all of the electric power generated by the fuel cell. The battery is supplied with some or all of the electric power generated by the fuel cell, and supplies electric power to the motor and the hydrogen production device.

The present invention relates to a power supply system for underwater vehicles, in particular to a power supply system for autonomous underwater vehicles, to underwater vehicles equipped with such power supply systems and to a method of operating an underwater vehicle. The power supply system for underwater vehicles comprises a hydrogen fuel cell, which on the one hand is in fluid contact with a metal hydride storage tank, and on the other hand, with a membrane module that is capable of extracting dissolved oxygen from water. By combining the above mentioned components, the energy necessary to support the AUV operation and the operation of its sensors can be provided, replacing in an efficient and sustainable way the currently employed battery energy systems. For the operation of gliders, a weight compensating mechanism could also be implemented.

Embodiments of methods for capturing high-purity CO.sub.2 in a hydrocarbon facility and related systems are provided. The method comprises operating a hydrogen plant to generate a high-purity hydrogen stream and a CO.sub.2 rich stream with a CO.sub.2 concentration above 30%; introducing the high-purity hydrogen stream into an anode of a molten carbonate fuel cell; introducing the CO.sub.2 rich stream and O.sub.2 into a cathode of the molten carbonate fuel cell; reacting CO.sub.2 and O.sub.2 within the cathode to produce carbonate and a cathode exhaust stream from a cathode outlet; reacting carbonate from the cathode with H.sub.2 within the anode to produce electricity and an anode exhaust stream from an anode outlet, the anode exhaust stream comprising CO.sub.2 and H.sub.2O; separating the CO.sub.2 in the anode exhaust stream in one or more separators to form a pure CO.sub.2 stream and a H.sub.2O stream; and collecting the pure CO.sub.2 stream.