Abstract: A method for preparing a supported Ru and/or Ni catalyst includes mixing a magnesium precursor, a zinc precursor, or a nickel precursor with an aluminum precursor in solid phase to form a first mixture; adding an auxiliary agent to the first mixture to form a second mixture, wherein the auxiliary agent is to increase a specific surface area; calcining the second mixture at a first temperature to obtain a spinel carrier; placing the spinel carrier in a solution of a Ru and/or Ni metal salt to impregnate the spinel carrier with the Ru and/or Ni metal salt to obtain an impregnated carrier; and after drying, calcining the impregnated carrier at a second temperature to obtain the supported Ru and/or Ni catalyst.

Abstract: A bipolar plate assembly for a fuel cell includes a cathode sheet assembly and an anode sheet assembly. The cathode sheet assembly includes a first cathode sheet, a second cathode sheet, and a first divider sheet arranged between the first cathode sheet and the second cathode sheet. The anode sheet assembly includes an anode sheet and a second divider sheet arranged on an anode sheet inner surface. The second cathode sheet is arranged on the second divider sheet such that the anode sheet assembly and the cathode sheet assembly form the bipolar plate. The cathode sheet assembly includes passages through which coolant fluid may flow. The first and second divider sheets prevent the fluid from permeating through the cathode and anode sheets and interacting with the adjacent cathode and anode gas diffusion layers.

Abstract: The present disclosure generally relates to systems and methods for impregnating resin in one or more coolant channels in a bipolar plate before or after assembly of the bipolar plates into a fuel cell stack.

Abstract: The present disclosure generally relates to systems and methods of purifying hydrogen, comprising humidifying, oxygenating, and purifying an impure gas stream to produce hydrogen in an electrochemical pump stack. The purified hydrogen is segregated and dispelled from the electrochemical pump stack.

Abstract: Some embodiments of the present disclosure relate to a displacer for reducing the consumption of a cryogen used in a superconductive magnet device. The displacer may occupy some space within the cryogen storage cavity or limit the cryogen into a relatively small space surrounding a superconductive coil in the cryogen storage cavity. The displacer may also include a displacer cavity that may be vacuum or contain a cryogen or another substance.

Abstract: A selective emitter for thermophotovoltaic energy conversion and method for fabricating the same is disclosed. The selective emitter includes a germanium wafer, and a reflective layer deposited on a first side of the germanium wafer. The reflective layer includes tungsten. The selective emitter also includes an anti-reflective layer deposited on a second side of the germanium wafer opposite the first side. The anti-reflective layer includes Si3N4. The method for fabricating a selective emitter for thermophotovoltaic energy conversion includes deposing a reflective layer on a first side of a germanium wafer, and deposing an anti-reflective layer on a second side of the germanium wafer, the first side being opposite the second side. The germanium wafer may be undoped. The reflective layer may be sputtered onto the germanium wafer. The anti-reflective layer may be deposited on the germanium wafer using plasma-enhanced chemical vapor deposition.

Abstract: Some embodiments of the present disclosure relate to a displacer for reducing the consumption of a cryogen used in a superconductive magnet device. The displacer may occupy some space within the cryogen storage cavity or limit the cryogen into a relatively small space surrounding a superconductive coil in the cryogen storage cavity. The displacer may also include a displacer cavity that may be vacuum or contain a cryogen or another substance.

Abstract: Some embodiments of the present disclosure relate to a displacer for reducing the consumption of a cryogen used in a superconductive magnet device. The displacer may occupy some space within the cryogen storage cavity or limit the cryogen into a relatively small space surrounding a superconductive coil in the cryogen storage cavity. The displacer may also include a displacer cavity that may be vacuum or contain a cryogen or another substance.

Abstract: Some embodiments of the present disclosure relate to a displacer for reducing the consumption of a cryogen used in a superconductive magnet device. The displacer may occupy some space within the cryogen storage cavity or limit the cryogen into a relatively small space surrounding a superconductive coil in the cryogen storage cavity. The displacer may also include a displacer cavity that may be vacuum or contain a cryogen or another substance.

Abstract: Some embodiments of the present disclosure relate to a displacer for reducing the consumption of a cryogen used in a superconductive magnet device. The displacer may occupy some space within the cryogen storage cavity or limit the cryogen into a relatively small space surrounding a superconductive coil in the cryogen storage cavity. The displacer may also include a displacer cavity that may be vacuum or contain a cryogen or another substance.

Abstract: Some embodiments of the present disclosure relate to a displacer for reducing the consumption of a cryogen used in a superconductive magnet device. The displacer may occupy some space within the cryogen storage cavity or limit the cryogen into a relatively small space surrounding a superconductive coil in the cryogen storage cavity. The displacer may also include a displacer cavity that may be vacuum or contain a cryogen or another substance.

Abstract: Some embodiments of the present disclosure relate to a displacer for reducing the consumption of a cryogen used in a superconductive magnet device. The displacer may occupy some space within the cryogen storage cavity or limit the cryogen into a relatively small space surrounding a superconductive coil in the cryogen storage cavity. The displacer may also include a displacer cavity that may be vacuum or contain a cryogen or another substance.

Abstract: Some embodiments of the present disclosure relate to a displacer for reducing the consumption of a cryogen used in a superconductive magnet device. The displacer may occupy some space within the cryogen storage cavity or limit the cryogen into a relatively small space surrounding a superconductive coil in the cryogen storage cavity. The displacer may also include a displacer cavity that may be vacuum or contain a cryogen or another substance.