A method of producing hydrogen includes providing a device, introducing a first stream including a fuel to the device, introducing a second stream comprising water to the device, reducing the water in the second stream to hydrogen, and extracting hydrogen from the device. The first stream and the second stream do not come in contact with each other in the device.

An inorganic structure body has a free-standing structure including a fibrous member and/or a shell. The fibrous member and/or the shell include a metal and/or an inorganic material and have a three-dimensionally continuous configuration. The free-standing structure may have a structure that is based on a nonwoven fabric or a porous membrane used as a substrate.

A hydrogen production system comprising: a fuel source; a water source; and a hydrogen producer; where the fuel source and the water source are in fluid communication with the hydrogen producer; and where fuel enters the hydrogen producer from the fuel source and water enters the hydrogen producer from the water source and the fuel and the water do not come in contact with each other in the hydrogen producer.

The present invention relates to an oxygenated water manufacturing device, which can be used in various fields because it can be applied to and used for not only mineral water or purified water, but also other various drinks such as tap water, barley tea, green tea, corn silk tea, and soju by using a specific configuration, which allows use of only high-purity oxygen from which ozone, which is produced with oxygen when mineral water is electrolyzed, and various inorganic substances and organic substances such as calcium (Ca), magnesium (Mg), and silicon (Si) contained in the mineral water are completely filtered out, and which completely prevents a phenomenon in which oxygen is not generated by deformation of an ion resin membrane disposed between an anode (+) and a cathode () in the oxygen generator due to a water-drying phenomenon in the hydrogen outlet.

An object of the invention is to provide a water splitting device having a low electrolysis voltage and excellent gas separation performance. The water splitting device of the invention is a water splitting device that generates gases from the positive electrode and the negative electrode, the water splitting device including: a bath to be filled with an electrolytic aqueous solution; the positive electrode and the negative electrode disposed in the bath; and a polymer membrane that is ion-permeable and is disposed between the positive electrode and the negative electrode in order to separate the electrolytic aqueous solution filling the bath into the positive electrode side and the negative electrode side, wherein the positive electrode and the negative electrode are installed at a predetermined distance from the polymer membrane, and the moisture content of the polymer membrane is 40% or more.

A module of the present invention is formed by housing, in a housing container, a cell stack device that includes cell stacks comprising an arrangement of a plurality of cells. The housing container includes a housing chamber that houses the cell stack device; a first gas introduction section provided in a lower portion of the housing chamber and configured to introduce a first gas supplied into the housing chamber; and a first gas circulation section provided on a side of the housing chamber and connected to the first gas introduction section. The width of the first gas circulation section is narrower than the width of the first gas introduction section.

A hydrogen supply system includes: a controller; and an electrochemical hydrogen pump including: an electrolyte membrane; a pair of electrodes provided on two surfaces of the electrolyte membrane; and a current adjuster adjusting a current flowing between the electrodes, the electrochemical hydrogen pump performs a hydrogen supply operation supplying pressure-boosted hydrogen to a hydrogen demander by allowing a current to flow between the electrodes by the current adjuster; and when a cumulative hydrogen supply amount which is supplied to the hydrogen demander from start to completion of the hydrogen supply operation to the hydrogen demander from the electrochemical hydrogen pump is smaller than a cumulative hydrogen supply amount in another hydrogen supply operation, the controller controls the current adjuster so that the current flowing between the electrodes is decreased to be smaller than that in the another hydrogen supply operation.

A solid oxide battery includes a solid electrolyte disposed between a first electrode and a second electrode. The first electrode and the second electrode are coupled to an external source or load to charge or discharge the solid oxide battery. The solid electrolyte is formed from a proton conducting material to transport and store hydrogen, which is the source of chemical energy. The second electrode is formed from a noble metal configured to induce formation of oxygen vacancies at the interface between the second electrode and the solid electrolyte. The oxygen vacancies are used to split water molecules during charging of the solid oxide battery, which results in the generation of hydrogen. Under bias, the hydrogen ions are transported into the solid electrolyte and stored. During discharge, a reverse process occurs where hydrogen is used to generate water and electricity.

The present disclosure is directed to a method for tuning the performance of at least one electrochemical cell of an electrochemical cell stack. The method includes supplying power to an electrochemical cell stack. The electrochemical cell stack includes a plurality of electrochemical cells. The method further includes monitoring a parameter of at least one electrochemical cell and determining if an electrochemical cell becomes impaired. The method also includes diverting a fraction of the current flow from the impaired electrochemical cell during operation of the electrochemical cell stack.

A carbon dioxide electrolytic device of an embodiment includes: an anode part including an anode which oxidizes water or hydroxide ions to produce oxygen; a cathode part including a cathode which reduces carbon dioxide to produce a carbon compound, a cathode solution flow path which supplies a cathode solution to the cathode, and a gas flow path which supplies carbon dioxide to the cathode; a separator which separates the anode part and the cathode part; and a differential pressure control unit which controls a differential pressure between a pressure of the cathode solution and a pressure of the carbon dioxide so as to adjust a production amount of the carbon dioxide produced by a reduction reaction in the cathode part.