Abstract:
An electrode (10) for deionization of water is made of a continuous activated carbon structure. The activated carbon is derived from a synthetic carbon precursor. The structure has openings, inlet (17) and outlet (16) ends such that water entering the inlet end passes through the openings (12) and exits through the outlet end (16), a conductive coating (17) on at least part of the outer surface of the structure, and a metal wire (19) in contact with the structure (10). A deionization system is made up of the electrodes (10) in series so that the outlet end of one electrode (10) is next to the inlet end of the nearest downstream electrode (10). The metal wire (19) of each electrode is connected to a power source. A method of removing ions from water involves removing air from the system, passing a current through the device, and passing a stream of water containing ions through it to remove the ions.
Abstract:
A plasticizable raw material batch mixture for forming a silicon carbide honeycomb structure comprising the following components: (1) powdered silicon metal; (2) a carbon precursor comprising a water soluble crosslinking thermoset resin having a viscosity of less than about 1000 centipoise (cp), and preferably less than about 500 cp; (3) a powdered silicon-containing filler; and, (4) a water soluble thermoplastic binder. Optionally, the batch mixture can include either, or both, an organic fibrous filler and a pore-forming filler comprising either a graphitic or a thermoplastic pore-forming filler. In another aspect, the invention provides for a process for producing a silicon carbide honeycomb structure utilizing the inventive batch material involving mixing together selected raw materials to form the previously mentioned plasticizable raw material batch and shaping the batch mixture to form a shaped green body, preferably extruding to form a honeycomb structure and thereafter drying, curing and sintering the green body at a temperature sufficient to convert the green body to a porous silicon carbide sintered body; preferably this temperature is above about 1400 DEG C.
Abstract:
The fabrication of activated carbon based supercapacitors. In particular, a monolithic activated carbon plate or honeycomb electrodes (4, 6 and 8) made by extrusion, molding, or casting is described. The carbon monolithic plates or honeycombs are fabricated from synthetic carbon precursor and active ingredient leading to superior electrical properties.
Abstract:
An electric double layer capacitor electrode includes microporous carbon, wherein the microporous carbon includes pores having a size of 1 nm or less, which provide a combined pore volume of at least 0.3 cm3/g, pores having a size of from 1 nm to 2 nm, which provide a combined pore volume of at least 0.05 cm3/g, and less than 0.15 cm3/g combined pore volume of any pores having a size greater than 2 nm.
Abstract:
A flow-through substrate comprising a sulfur-containing compound distributed throughout the flow-through substrate structure. The flow-through substrate may be used, for example, in the removal of a heavy metal from a fluid such as a gas stream.
Abstract:
Methods and apparatus for producing a semiconductor on insulator structure include: subjecting an implantation surface of a donor single crystal semiconductor wafer to an ion implantation process to create an exfoliation layer of the donor semiconductor wafer; bonding the implantation surface of the exfoliation layer to a glass substrate using electrolysis, wherein a liquidus viscosity of the glass substrate is about 100,000 Poise or greater.
Abstract:
Sorbent bodies comprising activated carbon, processes for making them, and methods of using them. The sorbent bodies can be used to remove toxic elements from a fluid, such as from a gas stream. For instance, the sorbent bodies may be used to remove elemental mercury or mercury in an oxidized state from a coal combustion flue gas.
Abstract:
Novel photovoltaic structures comprising an insulator structure bonded to an exfoliation layer, preferably of a substantially single-crystal donor semiconductor wafer, and at least one photovoltaic device layer, such as a conductive layer, and systems and methods of production of a photovoltaic device, comprising creating on a donor semiconductor wafer an exfoliation layer and transferring the exfoliation layer to an insulator substrate.
Abstract:
Disclosed herein, are activated carbon honeycomb catalyst beds used in a system for removing mercury from flue gas of a coal combustion system. The activated carbon honeycomb can for example remove greater that 90% mercury from flue gas with a simple design and without adding material to the flue gas. Also disclosed herein are methods for using the disclosed honeycomb catalyst beds and systems..