A lighter-than-air craft including an envelope. A mixture of helium and hydrogen disposed within the envelope. The mixture having a ratio of helium to hydrogen such that the mixture is nonflammable during operating conditions for the lighter-than-air craft. The mixture provides buoyancy for the lighter-than-air craft. A hydrogen fuel cell fluidically coupled with the mixture and configured to utilize the mixture to generate electricity. A propulsion system is coupled to the envelope, and the propulsion system is configured to provide propulsion for the lighter-than-air craft. The propulsion system is electrically coupled with the hydrogen fuel cell and receives electricity generated by the hydrogen fuel cell. The propulsion system is configured to utilize the electricity in providing the propulsion to the lighter-than-air craft.

A metal air battery system is provided with: a battery device including a negative electrode, a metal body electrically connected to the negative electrode, and a positive electrode and having a chamber which is defined between the negative electrode and the metal body and through which an electrolytic solution flows; an oxygen separation device for separating oxygen from air; and a bubbling device for supplying a gas containing oxygen separated by the oxygen separation device into the electrolytic solution supplied to the chamber while bubbling the gas.

A system includes a power generator to generate power from an reaction involving a first fuel reactant and a second fuel reactant, a fuel reactant supply source to supply the first fuel reactant to the power generator via a fuel supply line having a fuel expansion region, a radiant fluid circuit for circulation of a radiant fluid configured to cool the power generator, and one or more thermoelectric generators in thermal contact with the fuel expansion region and the radiant fluid circuit downstream of the fuel cell to generate electric power via a Seebeck effect using at least a portion of the waste heat generated by the power generator.

A fuel cell electric vehicle includes a ladder frame, a fuel cell stack, a fuel tank, a joint, and a center tunnel. The ladder frame includes two side members extending in parallel in a front-rear direction of the fuel cell electric vehicle and a plurality of cross members linking the two side members. The fuel tank stores fuel gas to be used by the fuel cell stack. The fuel cell stack and the fuel tank are fixed to the ladder frame. The fuel tank and the joint are linked by a first fuel pipe made of metal, and the joint and the fuel cell stack are linked by a second fuel pipe. The fuel tank and the joint are supported by the ladder frame and accordingly the relative vibration of the joint with respect to the fuel tank is reduced, and are disposed in the center tunnel.

A fuel cell system comprising a fuel cell and a fuel cell fluidic member configured to supply a fluid to the fuel cell is provided. The fuel cell fluidic member comprises a polymer composition that includes a polyarylene sulfide.

Method and system for managing hydrogen fuel in hydrogen fuel cell-powered aircraft is disclosed. The method identifies unused hydrogen fuel in a fuel tank of the aircraft. Determines an amount of the unused hydrogen fuel in the fuel tank of the aircraft. Transfers the amount of the unused hydrogen fuel from the fuel tank of the aircraft into a hydrogen fuel cell of the aircraft and converts the amount of the unused hydrogen fuel into electricity via the hydrogen fuel cell of the aircraft.

A fuel oxidation system including an inlet in fluid communication with an interior of a sealed container, and the sealed container is holding permeated gas released from a pressure vessel within the sealed container. Another inlet is in fluid communication with an environment surrounding the sealed container, and the environment includes oxygen gas (O.sub.2). An oxidation module is in fluid communication with the inlet and the other inlet, and the oxidation module is combining the permeated gas received by the inlet with the oxygen gas (O.sub.2) received by the other inlet to form a preferred substance.

The invention relates to a fuel cell module (10) having a plurality of fuel cells forming a fuel cell stack and having an enclosure (14) which surrounds the fuel cell stack. The enclosure (14) includes a bottom assembly and a lid cap assembly (30), wherein the bottom assembly includes a jacket at least partly form-fitted to the stack architecture providing internal alignment functions and a bottom plate in pressure contact with the fuel cell stack, wherein the lid cap assembly (30) comprises a compression plate (32) in pressure contact with the fuel cell stack. The bottom assembly (20) and the lid cap assembly (30) are provided with a progressive locking system providing a range of compression pressures to the fuel cell module (10). Further aspects of the invention relate to a fuel cell system and to a method for producing a fuel cell module (10).

A fuel cell power generation system capable of providing both electric vehicle charging power and normal power, includes a fuel cell system, a radiator configured to cool the fuel cell system, a main hydrogen storage unit provided at one side of the fuel cell system, the main hydrogen storage unit being configured to store hydrogen to be supplied to the fuel cell system, a power boosting unit provided to overlap fuel cell system in a vertical direction, the power boosting unit being configured to boost power generated by the fuel cell system, a power distribution unit configured to distribute the power boosted by the power boosting unit, and a partition unit configured to prevent heat discharged from the radiator from being transferred to the main hydrogen storage unit, the power boosting unit, and the power distribution unit.

A fuel cell vehicle includes a fuel cell stack, a hydrogen gas supply pipe for supplying a hydrogen gas to the fuel cell stack, and injectors provided at positions along the hydrogen gas supply pipe, for injecting the hydrogen gas to the fuel cell stack. The hydrogen gas supply pipe includes a buffer, provided on the upstream side of the injectors, and the hydrogen gas can flow through the buffer. The buffer includes a branch pipe branched from the hydrogen gas supply pipe, and the buffer tank coupled to the branch pipe so as to allow the hydrogen gas to flow through the buffer tank.