Abstract: The present disclosure relates to ruthenium promoter catalyst compositions. The ruthenium promoter catalyst compositions comprise ruthenium metal species, an oxide support material, and a promoter species independently selected from the group consisting of La, Rb, Y, Yb, K, Cs, and Ba, or hydroxides, nitrates or oxides thereof. The present disclosure also relates to various methods, processes, systems, membranes and/or reactors, which can utilise the ruthenium promoter catalyst compositions, for example in ammonia synthesis.

Abstract: The present invention relates to processes utilizing hydrogen species selectively permeable membranes for synthesis of products. The present invention also relates to processes for synthesizing products from hydrogen insertion or hydrogenation reactions utilizing hydrogen species permeable membranes. The present invention also relates to processes for synthesizing ammonia utilizing hydrogen species selectively permeable membranes. The membranes provide surfaced modified membranes that can comprise a porous layer containing a plurality of reactive sites comprising a metal species and a catalyst for promoting a reaction within the layer.

Abstract: The present invention relates to processes utilising hydrogen species selectively permeable membranes for synthesis of products. The present invention also relates to processes for synthesising products from hydrogen insertion or hydrogenation reactions utilising hydrogen species permeable membranes. The present invention also relates to processes for synthesising ammonia utilising hydrogen species selectively permeable membranes. The membranes provide surfaced modified membranes that can comprise a porous layer containing a plurality of reactive sites comprising a metal species and a catalyst for promoting a reaction within the layer.

Abstract: A PEM based water electrolysis stack consists of a number of cells connected in series by using interconnects. Water and electrical power (power supply) are the external inputs to the stack. Water supplied to the oxygen electrodes through flow fields in interconnects is dissociated into oxygen and protons. The protons are transported through the polymer membrane to the hydrogen electrodes, where they combine with electrons to form hydrogen gas. If the electrolysis stack is required to be used exclusively as an oxygen generator, the hydrogen gas generated would have to be disposed off safely. The disposal of hydrogen would lead to a number of system and safety related issues, resulting in the limited application of the device as an oxygen generator. Hydrogen can be combusted to produce heat or better disposed off in a separate fuel cell unit which will supply electricity generated, to the electrolysis stack to reduce power input requirements.

Abstract: A method of construction of an electrochemical interconnect plate, the method comprising the steps of: (a) etching predetermined fluid flow channels in a first conductive sheet; and (b) coating the first conductive sheet with a corrosion resistant layer of nickel and tin.

Abstract: A PEM based water electrolysis stack consists of a number of cells connected in series by using interconnects. Water and electrical power (power supply) are the external inputs to the stack. Water supplied to the oxygen electrodes through flow fields in interconnects is dissociated into oxygen and protons. The protons are transported through the polymer membrane to the hydrogen electrodes, where they combine with electrons to form hydrogen gas. If the electrolysis stack is required to be used exclusively as an oxygen generator, the hydrogen gas generated would have to be disposed off safely. The disposal of hydrogen would lead to a number of system and safety related issues, resulting in the limited application of the device as an oxygen generator. Hydrogen can be combusted to produce heat or better disposed off in a separate fuel cell unit which will supply electricity generated, to the electrolysis stack to reduce power input requirements.

Abstract: A method of forming a bipolar interconnect for a polymer electrolyte membrane fuel cell or electrolyser stack. The method includes providing a planar electrically-conductive blank, and deforming a portion of the conductive blank to provide a raised part on the blank defining an electrical contact and a fluid flow channel.

Abstract: An electrochemical device including a series of interconnected electrochemical units, each of the electrochemical units including a membrane electrode assembly arranged between a first conductive surface and a second conductive surface and wherein: the first conductive surface preferably can include at least one conductive tab overlapping a conductive tab of the second conductive surface of an adjacent electrochemical unit, the first and second conductive tabs being electrically interconnected to one another.

Abstract: A method of construction of an electrochemical interconnect plate, the method comprising the steps of: (a) etching predetermined fluid flow channels in a first conductive sheet; and (b) coating the first conductive sheet with a corrosion resistant layer of nickel and tin.

Abstract: A membrane electrode assembly (MEA) for an electrochemical cell including: a first electrode; a second electrode; and a proton exchange membrane (PEM) interposed between the first and second electrodes such that protons can pass between the first and second electrodes across the PEM; wherein the first electrode has a foraminous metallic substrate to provide support for the PEM.

Abstract: An electrochemical cell having a central active area and a perimeter area, the electrochemical cell including: a membrane electrode assembly (MEA) having a first electrode, a proton exchange membrane, and a second electrode of opposite electrical polarity to the first electrode; a pressed metal interconnect having on a first side a raised portion in electrical contact with the first electrode; the interconnect and the first electrode defining at least one fluid channel between the interconnect and the first electrode in the central active area, such that a fluid conveyed in the fluid channel is in fluid communication with the first electrode; a gasket interposed between the membrane and the interconnect in the perimeter area, such that the fluid is sealed within the fluid channel; and a fluid opening in the gasket allowing fluid communication between the fluid channel and a manifold in the perimeter area.

Abstract: A bipolar interconnect plate for a fuel cell, including: a first surface having a series of conductive interconnect posts for forming a conductive interconnect for conductively interconnecting, in use, with a cathode surface of a MEA; the plate including a series of ridges surrounding the first surface having air access slots therein in fluid communication with the first surface.