Abstract: A method for preparing a modified polypropylene film, the modified polypropylene film comprising a polypropylene film; and, an oxide layer and/or nitride layer, each of which has a thickness of 20-500 nm, on a surface of the polypropylene film; the method comprising: depositing the oxide layer or nitride layer on a surface of the polypropylene film by an Atomic Layer Deposition (ALD) process to obtain the modified polypropylene film; wherein the step of depositing the oxide layer or nitride layer comprises: placing the polypropylene film in an ALD reaction chamber; vacuumizing; heating up; introducing a carrier gas; and, passing at least two precursors into the reaction chamber alternately for reaction, resulting in the modified polypropylene film; wherein the precursors comprise a precursor for providing a metal element or Si, and a precursor for providing an oxygen or nitrogen element.

Abstract: The present disclosure relates to an electrode for supercapacitor, preparation method and use thereof. The electrode has an electrode terminal, an active layer and a coating layer from inside to outside. A material for preparing the coating layer includes an oxygenated compound, which contains at least one of transition metal elements or is doped with a substance containing a transition metal element. The coating layer on the surface of the active layer prevents organic electrolytes from being easily adsorbed and nucleated in the porous structure of the electrode surface due to interface defects, and facilitates to weaken the interface problems existing between the electrolyte and the electrode surface. The capacitor can significantly increase the operating voltage window (may be up to above 4V) and capacitance of the supercapacitor, and further increase energy density thereof.

Abstract: The disclosure belongs to the field of film materials, and discloses a high-temperature resistant modified polypropylene film, and a preparation method and use thereof. The modified polypropylene film includes a polypropylene film, and an oxide layer and/or nitride layer, each of which has a thickness of 20-500 nm, on the surface of the polypropylene film. It can significantly improve the thermal stability and high-temperature withstand voltage property of the polypropylene film by depositing the oxide layer or nitride layer of appropriate thickness on the surface of the polypropylene film by an ALD technology. The modified polypropylene film has high-temperature resistance, such as resistance to at high temperature of 150° C., and very small deformation quantity at high temperature, and can withstand a high breakdown voltage at high temperature. For example, the modified polypropylene film can withstand a voltage of 580 kV/mm at 140° C.

Abstract: The present disclosure relates to an electrode for supercapacitor, preparation method and use thereof. The electrode comprises an electrode terminal, an active layer and a coating layer from inside to outside. A material for preparing the coating layer comprises an oxygenated compound, which contains at least one of transition metal elements or is doped with a substance containing a transition metal element. Providing the coating layer on the surface of the active layer prevents organic electrolytes from being easily adsorbed and nucleated in the porous structure of the electrode surface due to interface defects, and facilitates to weaken the interface problems existing between the electrolyte and the electrode surface. The capacitor prepared by means of the electrode according to the embodiments of the present disclosure can significantly increase the operating voltage window (may be up to above 4V) and capacitance of the supercapacitor, and further increase energy density thereof.

Abstract: A high temperature article, for example an igniter for a combustor is presented. The igniter includes a central electrode having a discharge end, an insulator sleeve surrounding the central electrode and a tubular electrode shell surrounding the insulator sleeve. The tubular electrode shell has a forward end projecting beyond the discharge end. The tubular electrode shell includes an iron-based alloy. The igniter further includes a protective coating including alumina disposed on a surface of the forward end. A combustor of a turbine engine, including the igniter is also presented.

Abstract: A high temperature article, for example an igniter for a combustor is presented. The igniter includes a central electrode having a discharge end, an insulator sleeve surrounding the central electrode and a tubular electrode shell surrounding the insulator sleeve. The tubular electrode shell has a forward end projecting beyond the discharge end. The tubular electrode shell includes an iron-based alloy. The igniter further includes a protective coating including alumina disposed on a surface of the forward end. A combustor of a turbine engine, including the igniter is also presented.

Abstract: A flange assembly for use with a SOFC system includes a first flange, a second flange, and a dielectric element coupled between the first flange and the second flange. The dielectric element includes an outer cylindrical surface and an inner cylindrical surface. The inner cylindrical surface defines a cylindrical region having a circumference. The inner cylindrical surface also defines a channel that extends radially about the circumference of the cylindrical region.

Abstract: A film capacitor is presented. The film capacitor includes a thermally conductive support. The thermally conductive support includes a core including a first end and a second end. The thermally conductive support further includes a protrusion extending from at least one of the first end and the second end of the core, where at least one of the core and the protrusion includes a phase change material. Further, the film capacitor also includes a plurality of films disposed on at least a portion of the thermally conductive support, where the plurality of films includes a plurality of electrode films and a dielectric film. Further, the thermally conductive support for the film capacitor and a method of forming the film capacitor are also presented.

Abstract: A flange assembly for use with a SOFC system includes a first flange, a second flange, and a dielectric element coupled between the first flange and the second flange. The dielectric element includes an outer cylindrical surface and an inner cylindrical surface. The inner cylindrical surface defines a cylindrical region having a circumference. The inner cylindrical surface also defines a channel that extends radially about the circumference of the cylindrical region.

Abstract: A method of processing a continuous sheet of polymer material. The method includes routing the continuous sheet of polymer material from a first spool and along at least a first heated roller and a second heated roller, heating the continuous sheet of polymer material to a first temperature on the first heated roller and the second heated roller, and controlling a rotational speed of the first heated roller and the second heated roller such that the continuous sheet of polymer material is stretched when routed from the second heated roller to the first heated roller.

Abstract: A capacitor assembly is disclosed. The capacitor assembly includes a housing. The capacitor assembly further includes a plurality of capacitors disposed within the housing. Furthermore, the capacitor assembly includes a thermally conductive article disposed about at least a portion of a capacitor body of the capacitors, and in thermal contact with the capacitor body. Moreover, the capacitor assembly also includes a heat sink disposed within the housing and in thermal contact with at least a portion of the housing and the thermally conductive article such that the heat sink is configured to remove heat from the capacitor in a radial direction of the capacitor assembly. Further, a method of forming the capacitor assembly is also presented.

Abstract: A boiling water reactor core power level monitoring system includes a desired length of high dielectric, non-linear material insulated coaxial type cable in close proximity to the reactor core and a time domain reflectometry apparatus configured to measure a temporary characteristic impedance change associated with the coaxial type cable in response to at least one of neutron or gamma irradiation generated via the reactor core.

Abstract: A method for forming a bi-axially stretched dielectric film having a thickness less than 5 microns is presented. The method includes stretching a dielectric material along a transverse direction to form the bi-axially stretched dielectric film having a thickness less than 5 microns. The dielectric material is heated using infrared radiation during at least a duration of the stretching step. The dielectric material includes a substantially amorphous polymer having a glass transition temperature greater than 140 degrees Celsius.

Abstract: A dielectric film that includes a sheet fabricated from a dielectric material. The sheet has a thickness of less than about 5 microns, wherein the dielectric material includes an amorphous polymer, and wherein the dielectric material is substantially free of a solvent.

Abstract: A capacitor assembly is disclosed. The capacitor assembly includes a housing. The capacitor assembly further includes a plurality of capacitors disposed within the housing. Furthermore, the capacitor assembly includes a thermally conductive article disposed about at least a portion of a capacitor body of the capacitors, and in thermal contact with the capacitor body. Moreover, the capacitor assembly also includes a heat sink disposed within the housing and in thermal contact with at least a portion of the housing and the thermally conductive article such that the heat sink is configured to remove heat from the capacitor in a radial direction of the capacitor assembly. Further, a method of forming the capacitor assembly is also presented.

Abstract: A film capacitor is presented. The film capacitor includes a thermally conductive support. The thermally conductive support includes a core including a first end and a second end. The thermally conductive support further includes a protrusion extending from at least one of the first end and the second end of the core, where at least one of the core and the protrusion includes a phase change material. Further, the film capacitor also includes a plurality of films disposed on at least a portion of the thermally conductive support, where the plurality of films includes a plurality of electrode films and a dielectric film. Further, the thermally conductive support for the film capacitor and a method of forming the film capacitor are also presented.

Abstract: A system includes a capacitor unit having one or more capacitors within a body of the capacitor unit, wherein the capacitor unit comprises at least two bushings. The system includes a monitoring system having a first antenna. The monitoring system is configured to couple to the at least two bushings to form a resonant frequency (LC) circuit having a capacitance based at least in part on an effective capacitance of the capacitor unit. The monitoring system is configured to send a first signal to a radio frequency (RF) reader at a frequency based at least in part on the effective capacitance of the capacitor unit via the first antenna. The first signal is associated with health of the capacitor unit.

Abstract: A process for forming a capacitor is presented. The process includes providing a laminate including a dielectric layer disposed on a sacrificial substrate, forming a free-standing metallized dielectric layer and packaging the free-standing metallized dielectric layer to form a capacitor. The dielectric layer includes a polyetherimide. The step of forming the free-standing metallized dielectric layer is performed by: (a) disposing a metal layer on the dielectric layer to form a metalized laminate such that a metalized dielectric layer is formed on the sacrificial substrate, and removing the sacrificial substrate to form the free-standing metallized dielectric layer; or (b) removing the sacrificial substrate from the laminate to form a free-standing dielectric layer, and disposing a metal layer on the free-standing dielectric layer to form the free-standing metallized dielectric layer. A capacitor formed by the process is presented.

Abstract: An insulated winding is provided, wherein the insulated winding includes (a) an electrically conductive core; (b) an electrically insulating non-porous ceramic coating disposed on the conductive core; and (c) a composite silicone coating including a plurality of electrically insulating filler particles disposed on the ceramic coating. Further, a method of making an insulated winding is also provided.

Abstract: A capacitor comprises a substrate layer, a first electrode layer disposed on the substrate layer, and a first dielectric layer disposed on the electrode layer. The dielectric layer comprises inorganic ferroelectric or antiferroelectric particles, and a polymeric material having an elongation less than or equal to about 5 percent.