Abstract:
Various embodiments of the invention are directed toward a fuel cell assembly comprising a fuel cell casing and one or more fuel cell elements comprised of electrode and electrolyte material. The fuel cell casing is configured with threads and the fuel cell elements can be threadingly engaged in the fuel cell casing.
Abstract:
A fuel cell has a MEMS fuel-cell structure including an anode, a cathode, and an electrolyte, formed on a substrate, a portion of the substrate being removed from beneath the MEMS structure to leave the MEMS structure suspended in membrane form. An opening may extend through the substrate to leave the MEMS fuel-cell structure in a cantilevered configuration, supported by only one edge. Additional openings may be formed to relieve mechanical stress near an edge or edges supporting the MEMS fuel-cell structure, and/or to limit heat-conducting paths. Specially adapted methods are disclosed for fabricating the MEMS-based fuel cell in any of its various configurations.
Abstract:
A method of forming a fuel cell electrode includes providing a substrate and at least one deposition device, developing a deposition characteristic profile having at least one porous layer based on pre-determined desired electrode properties, forming a film in accordance with the deposition characteristic profile by sputtering material from the deposition device while varying a relative position of the substrate in relation to the deposition device with respect to at least a first axis.
Abstract:
Various embodiments related to fuel cells and/or fuel cell systems are disclosed herein. The various embodiments comprise methods and systems that are capable of collecting and/or using hydrogen obtained from an anode effluent stream, integrating hydrogen storage units, and/or are capable of supplying hydrogen and/or heat to a fuel cell stack.
Abstract:
Compositions comprising synthetic rock, e.g., aggregate, and methods of producing and using them are provided. The rock, e.g., aggregate, contains CO2 and/or other components of an industrial waste stream. The CO2 may be in the form of divalent cation carbonates, e.g., magnesium and calcium carbonates. Aspects of the invention include contacting a CO2 containing gaseous stream with a water to dissolve CO2, and placing the water under precipitation conditions sufficient to produce a carbonate containing precipitate product, e.g., a divalent cation carbonate.
Abstract translation:提供了包含合成岩石的组合物,例如聚集体,以及制备和使用它们的方法。 岩石,例如骨料,含有工业废物流中的CO 2和/或其它组分。 CO 2可以是二价阳离子碳酸盐的形式,例如碳酸钙和碳酸钙。 本发明的方面包括使含CO 2的气流与水接触以溶解CO 2,并将水置于足以产生含碳酸盐沉淀物例如二价阳离子碳酸盐的沉淀条件下。
Abstract:
A fuel cell includes at least one electrode operatively disposed in the fuel cell, and having a catalytically active surface. The present invention further includes a mechanism for maintaining a substantially uniform maximum catalytic activity over the surface of the electrode.
Abstract:
A fuel cell includes at least one electrode operatively disposed in the fuel cell, and having a catalytically active surface. The present invention further includes a mechanism for maintaining a substantially uniform maximum catalytic activity over the surface of the electrode.
Abstract:
The invention relates to an imaging device to be used with millimeter and/or sub-millimeter radiation comprising at least a pair of substrates, at least one of which is patterned on at least one surface with a patterning defining at least one radiation detector, each radiation detector comprising: an antenna adapted to receive millimetre and/or sub-millimeter electromagnetic radiation, a mixer channel coupled to said antenna and in communication with a via extending through a substrate for connection to a signal output, a mixer comprising filters being mounted in the mixer channel for extracting an intermediate frequency signal in dependence upon said radiation received by the antenna, a waveguide structure coupled to said mixer and having a signal input for connection to a local oscillator.
Abstract:
A fuel cell is disclosed that includes a passive support having a fine pore region disposed between a first coarser pore region and a second coarser pore region. An exemplary fuel cell has an electrolyte material positioned in the fine pore region and a first electrode material positioned in the first coarser pore region and a second electrode material positioned in the second coarser pore region. Other exemplary devices and/or methods are also disclosed.
Abstract:
A method for making a photonic structure, including creating a first vapor stream of a first vapor material, the first vapor stream having a first non-uniform flux in at least one direction; and moving a substrate in at least a portion of the vapor stream. In addition, the method includes depositing the first vapor material on a first major surface of said substrate, and forming a first layer and a density gradient in the first layer during deposition. The first layer is disposed on and the density gradient is in a direction perpendicular to the first major surface.