Disclosed herein are electrolytes having increased proton conduction and steam tolerance for use in solid oxide electrolysis cells (SOECs). The disclosed SOECs provide an enhanced means for obtaining hydrogen. The disclosed SOECs provide enhanced conductivity and stability and, therefore, result in higher performance when used to fabricate electrolysis cells, fuel cells, and reversible cells.

A system is disclosed for providing inerting gas to a protected space, and also providing electrical power. The system includes an electrochemical cell comprising a cathode and an anode separated by a separator comprising a proton transfer medium. Inerting gas is produced at the cathode. A fuel source comprising methanol or formaldehyde or ethanol and a water source are each in controllable operative fluid communication with the anode. A controller is configured to alternatively operate the system in a first mode of operation where water is directed to the anode fluid flow path inlet and electric power is directed from a power source to the electrochemical cell, and in a second mode of operation in which the fuel is directed from the fuel source to the anode fluid flow path inlet and electric power is directed from the electrochemical cell to the power sink.

A Multi-Mode Regenerative Fuel Cell system comprising a non-flow thru fuel cell operatively coupled to a high or medium pressure electrolyzer; a distributed reactant storage assembly comprising at least one hydrogen storage means and at least one oxygen storage means, said distributed reactant storage assembly operatively coupled to said fuel cell and electrolyzer; a pilot oxygen storage means operatively coupled to said oxygen storage means; a water storage means operatively coupled to said fuel cell and electrolyzer, and an aircraft power load operatively coupled to said fuel cell and electrolyzer.

A battery includes: an electrode group including an air electrode and a negative electrode that are stacked with a separator interposed therebetween; and a container housing the electrode group together with an alkaline electrolyte liquid. The air electrode includes a catalyst for an air electrode. This catalyst for an air electrode is a catalyst for an air electrode including an oxide containing at least bismuth (Bi), ruthenium (Ru), sodium (Na), and oxygen, and Na/(Ru+Bi+Na) representing an atomic ratio of the sodium to a sum of the bismuth, the ruthenium, and the sodium is 0.126 or more and 0.145 or less.

A fuel cell system includes a fuel cell having a cathode and an anode configured to receive a portion of a hhydrocarbon feed and to output an anode exhaust stream comprising carbon dioxide, hydrogen, and water; and an electrolyzer cell having a cathode and an anode. The anode of the electrolyzer cell is configured to receive a first portion of the anode exhaust stream and another portion of the hydrocarbon feed, and to generate a hydrogen stream.

The present invention relates to an enhanced catalytic nickel oxide sheet having an organic part which includes non-stoichiometric nickel oxides dispersed in an organic matrix, wherein the catalytic sheet is supported on a substrate. The invention also relates to a method for obtaining the catalytic film and to its uses as an electrode in electrocatalysis of water or in photocatalysis.

An electrolyzer system and a fuel cell system that include hydrogen blowers configured to compress hydrogen streams generated by the systems. The electrolyzer system includes a steam generator configured to generate steam, a stack of solid oxide electrolyzer cells configured to generate a hydrogen stream using the steam received from the steam generator, a hydrogen blower configured to pressurize the hydrogen stream generated by the stack, and a hydrogen processor configured to compress the pressurized hydrogen stream.

A solid oxide electrolyzer cell (SOEC) includes a solid oxide electrolyte, a fuel-side electrode disposed on a fuel side of the electrolyte, and an air-side electrode disposed on an air side of the electrolyte. The air-side electrode includes a barrier layer disposed on the air side of the electrolyte and including a first doped ceria material, and a functional layer disposed on the barrier layer and including an electrically conductive material and a second doped ceria material.

Embodiments may include a hydrogen-based power storage unit device that provides power for electric vehicles, and other uses, without requiring hydrogen refueling infrastructure. For example, in an embodiment, an apparatus may comprise a power source, a water supply, an electrolyzer connected to the power source adapted to separate water from the water supply into hydrogen and oxygen, a fuel cell adapted to generate electrical power using the separated hydrogen and oxygen, and a power conditioning unit adapted to output a configured electrical power output.

A fuel cell energy circulative utilization system includes an input energy, a first electric cell having an electricity output terminal and an energy output terminal, a second electric cell having an electricity input terminal, an energy input terminal, and an energy output terminal, and an energy circulation control device connected among the first and second electric cells and the input energy. The input energy includes an energy source containing hydrocarbons or hydrogen and connected to an energy input port of the first electric cell in order to make the first electric cell outputs electricity through the electricity output terminal and energy products of thermal energy and water through the energy output terminal. The electricity output terminal and the energy output terminal for thermal energy and water of the first electric cell are respectively connected to the electricity input terminal and the energy input terminal of the second electric cell, in order to make the second electric cell to at least output a hydrogen source through the energy output terminal thereof to the energy circulation control device, so that the energy circulation control device controls circulation of hydrogen for feeding to the energy input terminal of the first electric cell for reuse. The energy circulation control device is also operable to switch operations of the first and second electric cells between working modes of solid oxide electrolysis cell and solid oxide fuel cell.