Abstract: The present disclosure relates to a lithium ion battery electrode. The lithium ion battery electrode comprises a current collector and at least one electrode material layers stacked on the current collector. Each of the at least one electrode material layers comprises an electrode active material layer, a conductive agent, an adhesive material, and a carbon nanotube layered structure. The conductive agent and the adhesive material are dispersed in the electrode active material layer. The carbon nanotube layered structure is located on the electrode active material layer, and at least part of the carbon nanotube layered structure is embedded in the electrode active material layer. The electrode active material layer is located between the current collector and the carbon nanotube layered structure.

Abstract: A method for making a battery electrode is provided. A carbon nanotube material is provided. The carbon nanotube material is placed into a furnace containing carbon dioxide. The furnace is heated to a temperature about 800° C. to about 950° C., and the carbon nanotube material is oxidized. The oxidized carbon nanotube material is dispersed in a first solution to form a carbon nanotube suspension. An active material is ultrasonically dispersed in a second organic solvent to form an active material dispersion. The carbon nanotube suspension is mixed with the active material dispersion to form a second solution. The second solution is stirred by ultrasonic means and dried after filtering.

Abstract: A method for oxidizing multi-walled carbon nanotubes is provided. At least one multi-walled carbon nanotube is provided. The at least one multi-walled carbon nanotube is placed into a heating furnace filled with carbon dioxide gas. The heating furnace is heated to a temperature ranged from about 800° C. to about 950° C., and the at least one multi-walled carbon nanotube is oxidized in the carbon dioxide.

Abstract: The present disclosure relates to a flexible strain sensor. The flexible strain sensor includes a composite structure, a first electrode, a second electrode and a detector. The composite structure includes a carbon nanotube film and a substrate combined with each other. The carbon nanotube film defines a desired deformation direction and includes a plurality of first carbon nanotubes oriented substantially perpendicular with the desired deformation direction. The plurality of first carbon nanotubes are joined end to end with each other along their orientation direction. The first electrode and the second electrode are separately located at two opposite ends of the carbon nanotube film and electrically coupled with the carbon nanotube film. The detector is electrically connected with the first electrode and the second electrode.

Abstract: A method of growing carbon nanotubes is related. A reactor is provided. The reactor includes a reactor chamber and a carbon nanotube catalyst composite layer suspended in the reactor chamber. The carbon nanotube catalyst composite layer includes a carbon nanotube layer and a number of catalyst particles dispersed in the carbon nanotube layer. A mixture of carbon source gas and carrier gas is introduced into the reactor chamber to penetrate the carbon nanotube catalyst composite layer. The carbon nanotube catalyst composite layer is heated.

Abstract: The present disclosure relates to a lithium-sulfur battery separator. The lithium-sulfur battery separator comprises a separator substrate and a functional layer covered on the separator substrate. The functional layer comprises at least two carbon nanotube layers and at least two graphene oxide composite layers. Each of the at least two graphene oxide composite layers comprises a plurality of graphene oxide sheets and a plurality of manganese dioxide nanoparticles, and the plurality of manganese dioxide nanoparticles are adsorbed on the plurality of graphene oxide sheets and embedded in an interlayer formed by the carbon nanotube layer and the plurality of graphene oxide sheets. The present disclosure also relates to a lithium-sulfur battery comprising the lithium-sulfur battery separator.

Abstract: The present disclosure relates to a method for making a lithium-sulfur battery separator. The method comprises providing a separator substrate, and forming a functional layer on at least one surface of the separator substrate. A method for forming the functional layer comprises applying a first carbon nanotube layer on the at least one surface; dispersing a plurality of graphene oxide sheets and a plurality of manganese dioxide nanoparticles in a solvent to form a mixture; and depositing the mixture on a surface of the first carbon nanotube layer to form a first graphene oxide composite layer; applying a second carbon nanotube layer on a surface of the first graphene oxide composite layer; and forming a second graphene oxide composite layer on a surface of the second carbon nanotube layer.

Abstract: An camera, the camera including: an photosensitive device and an image processor, wherein the photosensitive device includes a plurality of photosensitive units, a measuring device and a data processor; the plurality of photosensitive units are distributed in an array, wherein each photosensitive unit is configured to receive and convert light signal to form a temperature difference or a potential difference; the measuring device is configured to measure the temperature difference or the potential difference; a data processor is configured to analyze and calculate the potential difference or the temperature difference.

Abstract: A lithium-sulfur battery includes a cathode, an anode, a lithium-sulfur battery separator and an electrolyte. The lithium-sulfur battery separator includes a PSL and a FL. The FL is located on a surface of the PSL. The FL comprises carbon nanotube structure and a plurality of MoP2 nanoparticles. The carbon nanotube structure defines a plurality of micropores. The plurality of MoP2 nanoparticles is located on surface of the carbon nanotube structure and filled in micropores in the carbon nanotube structure.

Abstract: A lithium-sulfur battery includes a cathode, an anode, a lithium-sulfur battery separator and an electrolyte. The lithium-sulfur battery separator includes a PSL and a FL. The FL is located on a surface of the PSL. The FL comprises a plurality of graphene sheets and a plurality of MoP2 nanoparticles uniformly mixed with each other.

Abstract: A lithium-sulfur battery includes a cathode, an anode, a lithium-sulfur battery separator and an electrolyte. The lithium-sulfur battery separator includes a PSL and a FL. The FL is located on a surface of the PSL. The FL includes a plurality of carbon nanotubes and a plurality of MoP2 nanoparticles uniformly mixed with each other.

Abstract: A lithium-sulfur battery separator includes a PSL and a FL. The FL is located on a surface of the PSL. The FL comprises carbon nanotube structure and a plurality of MoP2 nanoparticles. The carbon nanotube structure defines a plurality of micropores. The plurality of MoP2 nanoparticles is located on surface of the carbon nanotube structure and filled in micropores in the carbon nanotube structure.

Abstract: A lithium-sulfur battery includes a cathode, an anode, a lithium-sulfur battery separator and an electrolyte. The lithium-sulfur battery separator includes a PSL and a FL. The FL is located on a surface of the PSL. The FL includes a plurality of graphene sheets and a plurality of MoP2 nanoparticles uniformly mixed with each other.

Abstract: A lithium-sulfur battery separator includes a PSL and a FL. The FL is located on a surface of the PSL. The FL includes a plurality of carbon nanotubes and a plurality of MoP2 nanoparticles uniformly mixed with each other.

Abstract: An photosensitive device, the sensor comprising: a plurality of photosensitive units distributed in an array, each photosensitive unit configured to receive and convert light signal, wherein the photosensitive unit comprises a detecting element and a polarizer, the detecting element comprises a carbon nanotube structure comprising a plurality of carbon nanotubes oriented along the same direction, and the polarizer is configured to generate polarized light to irradiate a part surface of the carbon nanotube structure; a measuring device configured to measure temperature differences or potential differences generated in the carbon nanotube structure by irradiating; a data processor configured to analyze and calculate the potential differences or the temperature differences to obtain the wavelength of the light signal.

Abstract: A method for making a lithium-sulfur battery separator includes providing a separator substrate comprising a first surface and a second surface opposite to the first surface; and forming a functional layer on at least one of the first surface and the second surface. A method of forming the functional layer includes providing a carbon nanotube layer comprising a plurality of carbon nanotubes; etching the carbon nanotube layer to form defects on surfaces of the plurality of carbon nanotubes; and forming a hafnium oxide layer on the defects to form a carbon nanotube/hafnium oxide composite layer.

Abstract: A lithium-sulfur battery separator includes a separator substrate and a functional layer coated on the separator substrate. The functional layer includes a carbon nanotube layer and a hafnium oxide layer. The carbon nanotube layer includes a plurality of carbon nanotubes. The hafnium oxide layer includes a plurality of hafnium oxide nanoparticles. The hafnium oxide nanoparticles are adsorbed on surfaces of the carbon nanotubes. The present disclosure also relates to a lithium-sulfur battery comprising the lithium-sulfur battery separator.

Abstract: The present disclosure relates to a lithium-ion battery anode comprising a flexible and free-standing carbon nanotube film, and a plurality of titanium dioxide nanoparticles uniformly adsorbed on a surface of each of the plurality of carbon nanotubes. The flexible and free-standing carbon nanotube film comprises a plurality of carbon nanotubes. A particle size of each of the plurality of titanium dioxide nanoparticles is less than or equal to 30 nanometers. The present disclosure also relates to a lithium-ion battery comprising the lithium-ion battery anode.

Abstract: The present disclosure relates to a method for making a lithium-ion battery anode. The method comprises the steps of scratching off a carbon nanotube array to obtain a plurality of carbon nanotubes, adding the plurality of carbon nanotubes into a solvent, and ultrasonically dispersing the solvent to make the plurality of carbon nanotubes form a three-dimensional network-like structure; adding a titanium salt into the solvent, wherein the titanium salt hydrolyzes to form a plurality of titanium dioxide particles, and the plurality of titanium dioxide particles are adsorbed on surfaces of the plurality of carbon nanotubes; and separating the nanotube three-dimensional network structure from the solvent to form a precursor, and drying the precursor to form a titanium dioxide-carbon nanotube composite film.

Abstract: A method for making an anode active material of a lithium ion battery is provided. In the method, a tetrabutyl titanate solution and a water solution of lithium hydroxide is provided. The tetrabutyl titanate solution is incrementally added into the water solution of lithium hydroxide to react with the water solution of lithium hydroxide in an alkaline environment to obtain a mixed precipitate. The mixed precipitate is calcined to synthesize a spinel type lithium titanate. The spine lithium titanate is used as the anode active material to improve an electrochemical performance of the lithium ion battery.