Provided is an air electrode or water electrolysis anode showing a higher catalytic activity than carbon black and not having a risk of oxidative degradation, in particular, an air electrode or water electrolysis anode for a metal-air battery or a water electrolysis apparatus. The air electrode or water electrolysis anode includes an electron-conductive material represented by LaNi.sub.1−x−yCu.sub.xFe.sub.yO.sub.3−δ (where x>0, y>0, x+y<1, and 0≦δ≦0.4).

A gas permeable or breathable electrode and method of manufacture thereof. In one example there is an electrolytic cell having an electrode comprising a porous material, wherein gas produced at the electrode diffuses out of the cell via the porous material. In operation the gas is produced at the at least one electrode without substantial bubble formation. In another example there is an electrode having a porous conducting material with a hydrophobic layer or coating applied to a side of the porous conducting material. A catalyst may be applied to another side. The gas permeable or breathable electrode can be used in an electrolytic cell, electrochemical cell, battery and/or fuel cell. Gas produced at the electrode diffuses out of a cell via at least part of the electrode, separating the gas from the reaction at the electrode.

The present invention is to provide a solid oxide fuel cell test apparatus for a solid oxide electrolysis cell with a tubular evaporator furnished in the fuel delivery mechanism of the solid oxide fuel cell test apparatus being connected in serial to an external water supply, and the tubular evaporator having multilayer porous internal filler material may facilitate the inflow of water to be uniformly diffused and heated, providing a stable water vapor for introducing into the fuel cell with the fuel, mitigating adverse effects caused by pulse voltages to the fuel cell during high-temperature water electrolysis hydrogen test, so that more reliable test is achievable in order to obtain a solid oxide fuel cell with hydrogen generation from the water electrolysis.

The present invention concerns a membrane-less electrolyzer comprising a fluidic channel for receiving an electrolyte fluid; a first electrode and a second electrode located inside the fluidic channel, the first and second electrode permitting to extract a first gas and a second gas inside the fluidic channel from the electrolyte fluid, the first electrode and second electrode being separated by solely a surrounding fluid in the fluidic channel or the electrolyte; and a first fluidic transport channel for transporting the first gas to a first outlet and a second fluidic transport channel for transporting the second gas to a second outlet.

A cathode material comprising a titanium sheet and platinum, the platinum being in the form of nanoparticles deposited on at least one side of the titanium sheet, to form a decoration thereon, and processes for the preparation thereof.

A copolymer containing carbazole-based and vinylene based moieties, a photoelectrode comprising a metal oxide substrate and the copolymer as a photoelectrocatalyst component to the photoelectrode, as well as a photoelectrochemical cell including the photoelectrode. Methods of producing the copolymers, and methods of using the photoelectrochemical cell to produce hydrogen gas are also provided.

The object of the invention is a method of hydrogen and oxygen production by electrolysis method, especially adapted to electrolysis of water. The method of hydrogen and oxygen production by electrolysis method, in particular, electrolysis of water characterized in that wind power drives a DC generator and powers the electrodes performing electrolysis, preferably electrolysis of water. A device for hydrogen and oxygen production by electrolysis of water characterized in that it is created by a windmill whose rotating shaft is connected to a DC generator whose outputs are connected to electrodes placed in the vessel with the electrolyte, preferably water, thereby using wind power and windmill power directly to produce hydrogen and oxygen.

According to one embodiment, an electrolytic cell includes: a housing for retaining an electrolytic solution; a diaphragm that partitions an interior of the housing into an anode-side cell and a cathode-side cell; an anode electrode that is provided in the anode-side cell and has most of a surface in contact with an anode-side gas phase; and a cathode electrode that is provided in the cathode-side cell and has most of a surface in contact with a cathode-side gas phase. According to the other embodiment, a hydrogen production apparatus according to the present embodiment includes: an electrolytic solution tank that retains an electrolytic solution; and a pump that supplies the electrolytic solution between the anode electrode and the cathode electrode from the electrolytic solution tank.

An improved electrolysis system is disclosed in which the tank is designed to operate with a plurality of electrodes that are connected in a parallel plate configuration to a DC power source. The electrode geometry provides a means in which the height of the electrodes is lessened by increasing the length of the electrodes to provide the necessary area for any given current input. The lessened height of the electrode reduces the travel path of the gases escaping to the surface thereby reducing the void fracture height area of the bubbles and increasing the overall system efficiency. Additional efficiencies are obtained with a high surface area of contact between the electrical bus segments and the electrodes.

The present invention relates to an oxygen generator integrated with an ozone removal filter such that an ozone removal filter is provided in an oxygen discharge opening communicating with an oxygen discharge hole of a water electrolytic cell constituting an apparatus for producing oxygen by using mineral water among generally used water, for filtering ozone generated with oxygen during electrolysis of water and ozone compounds, in which ozone is combined with various organic and inorganic materials contained in mineral water, such as calcium (Ca), magnesium (Mg) and silicon (Si), and thus the oxygen generator allows only high purity oxygen to pass through and to be discharged through the oxygen discharge hole.