Apparatuses and methods of measuring a hydrogen diffusivity of a metal structure including during operation of the metal structure, are provided. A hydrogen charging surface is provided at a first location on an external surface of the structure. In addition, a hydrogen oxidation surface is provided at a second location adjacent to the first location on the external surface of the structure. Hydrogen flux is generated and directed into the metal surface at the charging surface. At least a portion of the hydrogen flux generated by the charging surface is diverted back toward the surface. A transient of the diverted hydrogen fluxes measured, and this measurement is used to determine the hydrogen diffusivity of the metal structure in service.

Described herein is an electrolysis cell apparatus (2000) comprising an outer enclosure (100) for containing an electrolyte solution, the outer enclosure (100) has a first end (100A), a second end (100B) and an intermediate enclosure section (100M) located between the first and second end (100A), (100B) a plurality of electrolysis cell plates (80) forming at least one electrolysis region in which electrolysis occurs, housed within the outer enclosure (100) and at least partially immersed in an electrolyte solution; and a cell plate enclosure (8000) disposed within the outer enclosure (100) that at least partially encloses the plurality of electrolysis cell plates (80), wherein the cell plate enclosure (8000) is adapted to concentrate electrolyte ions in close proximity to the plurality of electrolysis cell plates (80) in use.

This disclosure relates to novel manganese hydrides, processes for their preparation, and their use in hydrogen storage applications. The disclosure also relates to processes for preparing manganese dialkyl compounds having high purity, and their use in the preparation of manganese hydrides having enhance hydrogen storage capacity.

A container is disclosed. The container includes a canister body, at least one heating device and at least one safety device. The canister body includes an inner space for storing a gas storage material. The at least one heating device is accommodated within an inner space of the canister body for heating the gas storage material, so that the gas storage material releases a gas. The at least one safety device is connected with the corresponding heating device and installed on an end part of the canister body. When a temperature of the inner space is higher than a predetermined temperature value or a pressure of the inner space is higher than a predetermined pressure value, a portion of the gas is released through the safety device.

Hydrogen storage negative electrodes based on group IV elements, for example hydrogen storage negative electrodes based on silicon and/or carbon, are highly effective towards reversibly charging/discharging hydrogen in an hydride electrochemical cell.

A method and an apparatus for producing sodium borohydride that have excellent energy efficiency and production efficiency are provided. Using a production apparatus 20 comprising: a cylindrical reaction container 21; a cylindrical reaction portion 22 which is rotatably held in this reaction container 21 and in which sodium metaborate that is a raw material 1 and granular aluminum are housed together with a grinding medium 2; and a hydrogen introduction portion 23 for introducing hydrogen gas into the reaction portion 22 directly or via the reaction container 21, the sodium metaborate and the granular aluminum are reacted under a hydrogen atmosphere, while being rolled and ground with the grinding medium, to obtain sodium borohydride.

The present disclosure relates to improved processes for the preparation of metal hydrides. The present disclosure also relates to metal hydrides, e.g., metal hydrides prepared by the processes described herein, that exhibit enhanced hydrogen storage capacity when used as hydrogen storage systems.

The present disclosure relates to improved processes for the preparation of metal hydrides. The present disclosure also relates to metal hydrides, e.g., metal hydrides prepared by the processes described herein, that exhibit enhanced hydrogen storage capacity when used as hydrogen storage systems.

Disclosed is a method of preparing an oxide for hydrogen storage, including a) mixing and calcining vanadium oxide and titanium oxide, b) impregnating the oxide obtained in step a) with a noble metal precursor aqueous solution, and c) subjecting the oxide obtained in step b) to heat treatment in a reducing atmosphere, wherein the oxide obtained in step a) has the composition of Chemical Formula 1 below and is composed of a single-phase TiO.sub.2 crystal phase:

V.sub.1-xTi.sub.xO.sub.2[Chemical Formula 1] (in Chemical Formula 1, 0.05x0.95).

Apparatuses and methods of measuring a hydrogen diffusivity of a metal structure including during operation of the metal structure, are provided. A hydrogen charging surface is provided at a first location on an external surface of the structure. In addition, a hydrogen oxidation surface is provided at a second location adjacent to the first location on the external surface of the structure. Hydrogen flux is generated and directed into the metal surface at the charging surface. At least a portion of the hydrogen flux generated by the charging surface is diverted back toward the surface. A transient of the diverted hydrogen fluxes measured, and this measurement is used to determine the hydrogen diffusivity of the metal structure in service.