This undercoat foil for an energy storage device electrode comprises a collector base plate, and an undercoat layer formed on at least one surface of the collector base plate, the undercoat layer containing carbon nanotubes, and the coating amount per collector base plate surface being 0.1 g/m.sup.2 or less. Since this undercoat foil can be effectively welded by ultrasound, the use thereof allows a low-resistance energy storage device and a simple and effective production method therefor to be provided.

The disclosure provides a thermoelectric conversion structure and its use in heat dissipation device. The thermoelectric conversion structure includes a thermoelectric element, a first electrode and an electrically conductive heat-blocking layer. The thermoelectric element includes a first end and a second end opposite to each other. The first electrode is located at the first end of the thermoelectric element. The electrically conductive heat-blocking layer is between the thermoelectric element and the first electrode.

A protected active metal electrode and a device with the electrode are provided. The protected active metal electrode includes an active metal substrate and a protection layer on a surface of the active metal substrate. The protection layer at least includes a metal thin film covering the surface of the active metal substrate and an electrically-conductive thin film covering a surface of the metal thin film. A material of the metal thin film is Ti, V, Cr, Zr, Nb, Mo, Hf, Ta, or W. A material of the electrically-conductive thin film is selected from nitride of a metal in the metal thin film, carbide of a metal in the metal thin film, a diamond-like carbon (DLC), and a combination thereof.

A conductive elastic composite that retains conductivity despite stretching, wherein the conductive elastic composite comprises an elastomeric matrix, carbon nanotubes and carbon fibers.

The present disclosure provides a method for preparing a carbon nanotube conductive ball and a method for preparing a carbon nanotube ball conductive adhesive. The method for preparing the carbon nanotube conductive ball integrates the advantages of stability of polymer microsphere and SiO.sub.2 microsphere, and high conductivity of carbon nanotube, by applying polymer microsphere or SiO.sub.2 microsphere as matrix, and plating carbon nanotube material to obtain the spherical carbon nanotube conductive ball. The method is simple, low equipment requirements, abundant raw materials, low cost, and high efficiency, the particle size of the carbon nanotube conductive ball is controllable, the material stability and conductivity of the carbon nanotube conductive ball are excellent. The method for preparing the carbon nanotube ball conductive adhesive adopts carbon nanotube as an electrically conducting particle, which replaces the commonly used conductive gold ball in TFT-LCD field, the disadvantages in traditional conductive adhesive such as high filling content, expensive price, complicated preparation process, environmental pollution, and so on are solved. Besides, the carbon nanotube ball conductive adhesive also has a great prospect in ultra-fine circuit connections.

The present invention, in one embodiment, provides a method of measuring pressure or temperature using a sensor including a sensor element composed of a plurality of carbon nanotubes. In one example, the resistance of the plurality of carbon nanotubes is measured in response to the application of temperature or pressure. The changes in resistance are then recorded and correlated to temperature or pressure. In one embodiment, the present invention provides for independent measurement of pressure or temperature using the sensors disclosed herein.

A conductive thermoplastic resin composition, according to the present invention, comprises a polycarbonate resin and a conductive filler, wherein the conductive filler comprises carbon nanotube-modified glass fibers and/or processed carbon nanotube-modified glass fibers. A conductive thermoplastic resin composition has excellent electrical conductivity, flame retardancy, and mechanical properties.

Phase change material-carbon nanotube-metal substrate composites and methods of making and using thereof are described herein. Such composites allow for thermal storage and passive or combined active/passive thermal control of heat generating sources, such as in electronic devices.

Provided are a positive electrode for a secondary battery which includes a positive electrode collector, a porous positive electrode active material layer disposed on a surface of the positive electrode collector and including a positive electrode active material and first carbon nanotubes, and a conductive layer disposed on a surface of the positive electrode active material layer, wherein the conductive layer includes a porous network structure formed by a plurality of second carbon nanotubes and has a porosity equal to or greater than a porosity of the positive electrode active material layer +10 vol %, and a secondary battery including the same.

A process for treatment of nanoparticles of mineral filler for obtaining processed nanoparticles for use in polymerization in the presence of nanoparticles which includes the steps of (a) drying a mineral filler with an inert gas to remove catalyst poisons; (b) mixing the mineral filler dried obtained in step (a) with a swelling agent in a liquid state or near a critical state or in the supercritical state; (c) subjecting the swelling agent of the mixture obtained in step (b) to an endoenthalpic or isoentalphic phase change by altering the conditions of the temperature and/or pressure; (d) subjecting the nanoparticles of the mixture obtained in step (c) to contact of scavenging agent to react with catalyst poisons; then the mixture obtained in step (d) can be dried in a step (e) with an inert gas to remove sub-products from scavenging agent and catalyst poisons to obtain the treated nanoparticles.