Abstract: A graphite article formed of a creped graphite sheet is provided. The creped graphite sheet has a first major surface and a second major surface oppositely disposed to the first major surface and a plurality of macrofolds, each macrofold having a plurality of associated microfolds, wherein each microfold is smaller than the associated macrofold. The creped graphite article has improved flexibility as compared to a graphite sheet which has not been creped. The creped graphite sheet can be formed of a sheet of flexible natural graphite or a sheet of synthetic graphite.

Abstract: An electronic device having a thermal management system is provided. The thermal management system has a monolithic graphite element having a thickness of at least 150 microns. The graphite element has a thermal conductivity of at least about 700 W/mK. The graphite element is devoid of an internal adhesive, i.e., the graphite element is monolithic. The thermal management system is in operative contact with a heat source which comprises more than one electronic component. Preferably, the more than one electronic component is disposed on a stacked motherboard.

Abstract: Disclosed is a flexible graphite structure that can be used as a heat dissipation sheet of a flexible electronic device through a graphite sheet unit including a stretchable area formed as a cut area or an overlapping area. A disclosed flexible graphite structure includes: a graphite sheet unit comprising a single graphite sheet layer or multiple graphite sheet layers having at least one stretchable area; and a stretchable sheet layer configured to be attached to at least one of both outermost sides of the graphite sheet unit and to cover the at least one stretchable area, wherein the at least one stretchable area is formed by providing at least one pair of cutout areas in the single graphite sheet layer or by providing an overlapping area where the single graphite sheet layer or the multiple graphite sheet layers overlap.

Abstract: Assemblies having multi-functionalities of any combination of heat spreading, absorption of stray radiation, signal focusing, and shielding are provided. The assemblies may include a heat spreading layer of at least one sheet of a compressed particles of exfoliated graphite, graphitized polymers and combinations thereof. The assemblies may also include at least one magnetic layer, which may provide the benefits of magnetic flux management and/or stray radiation absorption. The assemblies may include an optional plastic coating on one or both of the exterior surfaces. The assemblies may be used to enable fast wireless charging of electronic devices by efficiently focusing magnetic flux for better power transmission efficiency.

Abstract: A composite article is provided for use as a heat spreader, a cooling element or as part of the heating system for a wide variety of items. The composite article can include at least one sheet of compressed particles of exfoliated graphite or graphiiized polymer. A protective coating may be aligned or adhered with a surface of the sheet. The article may also include at least one of a fiber reinforced polymer, a fiber weave or fiber mat or combinations thereof, aligned with at least one of the first surface of the sheet or a second surface of the sheet. The composite article can include a plurality of strips of compressed particles of exfoliated graphite, of graphiiized polymer or combinations thereof, which are woven together and/or it can Include cut outs, slits or other perforations to provide flexibility, stretehabi Kiy, and breathability.

Abstract: Cookware and other heating articles are included herein. The article may have a substrate forming a bottom surface of the cookware. The article may also have a graphite intermediate layer and cooking/heating surface disposed above the intermediate layers. The graphite layer may have one or more of the following properties: (1) a density of at least 0.64 g/cm3; (2) a water pick-up of a less than 30% by weight after a 2.5 hour soak in water at ambient conditions; (3) a Taber stiffness in the machine direction at least 25% higher than in the transverse direction; and (4) a sulfur content of less than 350 ppm and any combination thereof.

Abstract: A composite article is provided for use as a heat spreader, a cooling element or as part of the heating system for a wide variety of items. The composite article can include at least one sheet of compressed particles of exfoliated graphite or graphitized polymer. A protective coating may be aligned or adhered with a surface of the sheet. The article may also include at least on of a fiber reinforced polymer, a fiber weave or fiber mat or combinations thereof, aligned with at least one of the first surface of the sheet or a second surface of the sheet. The composite article can include a plurality of strips of compressed particles of exfoliated graphite, of graphitized polymer or combinations thereof, which are woven together and/or it can include cut outs, slits or other perforations to provide flexibility, stretchability, and breathability.

Abstract: A graphite article which can be compressed by more three (3%) percent at a contact pressure of 100 KPa or less without damaging the graphite article reducing the thermal impedance exhibited by the article. Also a graphite article comprising graphitized polymer having a thickness of at least 75 microns. Preferably the graphite has a density of less than 1.50 g/cc and a compressibility of more than 3% at a contact pressure of 100 KPa. Also the article has a generally sheet like shape. These articles may be used in a thermal management system to dissipate heat from a heat source.

Abstract: A graphite article which can be compressed by more three (3%) percent at a contact pressure of 100 KPa or less without damaging the graphite article reducing the thermal impedance exhibited by the article. Also a graphite article comprising graphitized polymer having a thickness of at least 75 microns. Preferably the graphite has a density of less than 1.50 g/cc and a compressibility of more than 3% at a contact pressure of 100 KPa. Also the article has a generally sheet like shape. These articles may be used in a thermal management system to dissipate heat from a heat source.

Abstract: A lithium ion battery pack includes a plurality of prismatic lithium polymer cells and one or more graphite heat spreaders. Each spreader has at least two major surfaces and is made of one of a sheet of a compressed mass of exfoliated graphite particles, a graphitized polyimide sheet, or combinations thereof.

Abstract: A heat spreader for an emissive display device, such as a plasma display panel or a light emitting diode, comprising at least one sheet of compressed particles of exfoliated graphite having a surface area greater than the surface area of that part of a discharge cell facing the back surface of the device.

Abstract: Cookware and other heating articles are included herein. The article may have a substrate forming a bottom surface of the cookware. The article may also have a graphite intermediate layer and cooking/heating surface disposed above the intermediate layers. The graphite layer may have one or more of the following properties: (1) a density of at least 0.64 g/cm3; (2) a water pick-up of a less than 30% by weight after a 2.5 hour soak in water at ambient conditions; (3) a Taber stiffness in the machine direction at least 25% higher than in the transverse direction; and (4) a sulfur content of less than 350 ppm and any combination thereof.

Abstract: A flexible graphite sheet support structure forms a thermal management arrangement for device having a heat source. The flexible graphite sheet support structure includes first and second spaced apart support members and a flexible graphite sheet secured to the spaced apart support members forming a free standing flex accommodating section that spans between them. Curve retention members having convex curved surfaces are used to keep the flex accommodating section in a bell shaped curve while preventing the flexible graphite sheet from exceeding a minimum bend radius. The thermal management arrangement formed by the flexible graphite sheet support structure enables the flexible graphite sheet to move heat from one support structure to the other while reducing the transmission of vibration between them and allowing relative movement between the spaced apart support structures.

Abstract: A method of producing graphene powder includes the heat treatment of a graphitizable polymer film to at least 2000 degrees C. to form a heat treated film having a substantially turbostratic graphitic structure. The heat treated film is then sheared along a plane substantially parallel to a major surface of the heat treated film to form a particulate having a thickness less than 100 nanometers.

Abstract: An LED light arrangement is provided. The light arrangement includes LED light emitting components mounted to a flexible circuit board having a flexible graphite substrate. The flexible circuit board includes a dielectric layer formed on the surface of the flexible graphite substrate and an electrically conductive layer formed on the surface of the dielectric. The high in-plane thermal conductivity graphite substrate provides enhanced heat transfer capability to effectively move of heat away from the electronic components for improved cooling of the heat generating light emitting component and surrounding devices.

Abstract: An electronic device has a heat source and a generally rectangular shape battery proximate the heat source. The battery may have first and second major surfaces. A thermal regulator is in thermal contact with both of the heat source and substantially all of at least the first major surface of the battery. During operation of the device, heat transferred from the heat source to the first major surface via the thermal regulator balances the temperature profile exhibited along the first major surface such that it is substantially uniform.

Abstract: A composite heat spreader includes a first flexible graphite layer, a second flexible graphite layer, and a gas evolving layer positioned between the first flexible graphite layer and the second flexible graphite layer. The gas evolving layer is temperature sensitive and when a threshold temperature is reached, the thermal conductivity of the gas evolving layer is reduced by at least factor of five.