Abstract: A photocapacitor is provided. The photocapacitor includes: a perovskite solar cell and a supercapacitor attached to the perovskite solar cell. The supercapacitor includes a first carbon nanotube structure. The perovskite solar cell includes third carbon nanotube structure. The first carbon nanotube structure is directly contacted with the third carbon nanotube structure.

Abstract: A method for making photocapacitor is provided. The method includes: preparing a perovskite solar cell, preparing a first supercapacitor electrode, deposing the first supercapacitor electrode onto the perovskite solar cell, dissolving a portion of a cell packaging structure and a first material, and preparing a second supercapacitor electrode opposite to the first supercapacitor electrode.

Abstract: A method for making a touch panel, the method comprises the following steps. Carbon nanotubes, a first substrate and a second substrate are provided. A carbon nanotube floccule structure is obtained by flocculating the carbon nanotubes. A first conductive layer is formed on the first substrate. A second conductive layer is formed on the second substrate. Two first-electrodes are located on opposite ends of a first electrode plate and two second-electrodes are located on opposite ends of a second electrode plate. The first electrode plate is spaced from the second electrode plate.

Abstract: The disclosure relates to a method for making fuel cell system. The fuel cell system includes a fuel cell module curved to form a chamber. The fuel cell module includes a container having a number of through holes and a membrane electrode assembly located on the container and cover the number of through holes. The membrane electrode assembly includes a proton exchange membrane having a first surface and a second surface opposite to the first surface, a cathode electrode located on the first surface and an anode electrode located on the second surface. A fuel cell module is at least partially immerged in the fuel and the oxidizing gas is supplied in to the chamber of the fuel cell module.

Abstract: A hybrid energy storage device includes a positive pole formed by stacking a supercapacitor first electrode and a battery positive electrode, a negative pole formed by stacking a supercapacitor second electrode and a battery negative electrode, and a separator located between the positive pole and the negative pole. The supercapacitor second electrode, the battery negative electrode, the supercapacitor first electrode, the battery positive electrode, and the separator are planar structures. The supercapacitor first electrode, the supercapacitor second electrode, the battery positive electrode, the battery negative electrode, the separator and electrolyte are packaged in a shell.

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 heat dissipation structure includes a thermal interface material and a transition layer. The thermal interface material includes a matrix and a plurality of carbon nanotubes dispersed in the matrix. The thermal interface material has a first surface and a second surface opposite to the first surface. The transition layer is positioned on one of the first surface or the second surface of the thermal interface material. A thickness of the transition layer is in a range from about 1 nanometer to about 100 nanometers. The transition layer is in contact with the carbon nanotubes of the thermal interface material. An interface thermal resistance between the transition layer and the heat source is less than that between the plurality of carbon nanotubes and the heat source. The present application also relates to a heat dissipation system adopting the heat dissipation structure.

Abstract: The disclosure relates to a method for using fuel cell. The fuel cell includes a container, wherein the container comprises a housing and a nozzle, and the housing defines through holes; the housing defines a chamber and an opening; the nozzle has a first end in air/fluid communication with the opening and a second end; and a membrane electrode assembly, which is flexible, on the container to form a curved membrane electrode assembly surrounding the chamber and covering the through holes, wherein the membrane electrode assembly comprises a proton exchange membrane having a first surface and a second surface, a cathode electrode on the first surface and an anode electrode on the second surface. The method includes at least partially immersing the fuel cell in a fuel; and supplying an oxidizing gas into the chamber.

Abstract: An electrostrictive composite includes a flexible polymer matrix and a carbon nanotube film structure. The carbon nanotube film structure is at least partially embedded into the flexible polymer matrix through a first surface. The carbon nanotube film structure includes a plurality of carbon nanotubes combined by van der Waals attractive force therebetween.

Abstract: An optical wavelength detecting device, the device including: a polarizer configured to transform an incident light into a polarized light; a detecting element configured to receive the polarized light and form a temperature difference or a potential difference between two points of the detecting element, wherein the detecting element comprises a carbon nanotube structure including a plurality of carbon nanotubes oriented along the same direction, and angles between a polarizing direction of the polarized light and an oriented direction of the plurality of carbon nanotubes is adjustable; a measuring device electrically connected to the detecting element and configured to measure the temperature difference or the potential difference; a data processor electrically connected to the measuring device and configured to obtain the optical wavelength by calculating and analyzing the temperature difference or the potential difference.

Abstract: An optical wavelength detecting device, the device including: a polarizer configured to transform an incident light into a polarized light; a detecting element configured to receive the polarized light and form a temperature difference or a potential difference between two points of the detecting element, wherein the detecting element includes a carbon nanotube structure including a plurality of carbon nanotubes oriented along the same direction, and angles between a polarizing direction of the polarized light and an oriented direction of the plurality of carbon nanotubes is adjustable; a measuring device electrically connected to the detecting element and configured to measure the temperature difference or the potential difference; a data processor electrically connected to the measuring device and configured to obtain the optical wavelength by calculating and analyzing the temperature difference or the potential difference.

Abstract: The invention relates to a rechargeable battery includes a first electrode, a second electrode, a separator, and electrolyte. The first electrode includes a first supercapacitor electrode, a first battery electrode, a first current collector, and a first connector. The first battery electrode is sandwiched between the first supercapacitor electrode and the first current collector. The first supercapacitor electrode and the first current collector are electrically connected via the first connector.

Abstract: The disclosure relates to a fuel cell system. The fuel cell system includes a fuel cell module, fuel and oxidizing gas. The fuel cell module includes a container and a membrane electrode assembly located on the container. The container includes a housing and a nozzle connected to the housing. The container defines a number of through holes located on the housing and covered by the membrane electrode assembly. The membrane electrode assembly includes a proton exchange membrane having a first surface and a second surface opposite to the first surface, a cathode electrode located on the first surface and an anode electrode located on the second surface.

Abstract: The disclosure relates to a fuel cell module. The fuel cell module includes a container and a membrane electrode assembly located on the container. The container includes a housing and a nozzle connected to the housing. The container defines a number of through holes located on the housing and covered by the membrane electrode assembly. The membrane electrode assembly includes a proton exchange membrane having a first surface and a second surface opposite to the first surface, a cathode electrode located on the first surface and an anode electrode located on the second surface.

Abstract: An electrothermal actuator includes at least one connecting portion; at least two operating portions; and at least two electrodes. Each of the at least one connecting portion and the at least two operating portions includes a flexible polymer layer and a carbon nanotube paper. A thickness ratio of the carbon nanotube paper and the flexible polymer layer ranges from 1:7 to 1:10. A density of the carbon nanotube paper is greater than 0.5 g/cm3. A thermal expansion coefficient of the carbon nanotube paper is greater than ten times that of the flexible polymer layer. A conductivity of the at least two operating portions along the current direction ranges from 1000 S/m to 6000 S/m. A conductivity of the at least one connecting portion along the current direction is greater than 6000 S/m.

Abstract: An electrothermal composite material includes a flexible polymer layer and a carbon nanotube paper stacked on the flexible polymer layer. The carbon nanotube paper is at least partly embedded into the flexible polymer layer. A thickness ratio of the carbon nanotube paper and the flexible polymer layer is in a range from about 1:7 to about 1:10. A density of the carbon nanotube paper is greater than or equal to 0.5 g/cm3. A thermal expansion coefficient of the carbon nanotube paper is greater than or equal to ten times that of the flexible polymer layer. A conductivity of the carbon nanotube paper along a first direction is in a range from about 1000 S/m to about 6000 S/m. An electrothermal actuator is also provided.

Abstract: A method for making an electrothermal actuator requires a carbon nanotube paper being provided. The carbon nanotube paper is cut along a cutting-line to form a patterned carbon nanotube paper. At least two electrodes are formed on the patterned carbon nanotube paper. Finally, the electrothermal actuator is obtained by forming a flexible polymer layer on the patterned carbon nanotube paper.

Abstract: An electrothermal actuator includes at least two operating portions and at least two electrodes. The at least two operating portions are electrically connected with each other to define at least one conductive path. Each of the at least two operating portions comprises a flexible polymer layer and a carbon nanotube paper. A thickness ratio of the carbon nanotube paper and the flexible polymer layer ranges from 1:7 to 1:10. A density of the carbon nanotube paper is greater than or equal to 0.5 g/cm3. A thermal expansion coefficient of the carbon nanotube paper is greater than or equal to ten times that of the flexible polymer layer. A conductivity of the carbon nanotube paper along a current direction of the at least two operating portions is in a range from about 1000 S/m to about 6000 S/m.

Abstract: An infrared detector based on carbon nanotubes is provided. The infrared detector includes a detecting element, a first electrode and a second electrode. The detecting element includes an absorbing part and a non-absorbing part. A first end is located in the absorbing part. A second end is located in the non-absorbing part. An angle between the absorbing part and the non-absorbing part is less than 90 degrees. A first electrode is electrically connected with the first end. A second electrode is electrically connected with the second end.

Abstract: An optical locking system comprises a light emitter, an optical wavelength identifying system, and a locking unit. The optical wavelength identifying system comprises an optical wavelength detecting device, a memory, a modulator, a comparison module, and an instruction module. The optical wavelength detecting device comprises a polarizer, a detecting element, a measuring device, and a data processor. The detecting element configured to form a temperature difference or a potential difference between two points of the detecting element when exposed to the polarized light, wherein the detecting element comprises a carbon nanotube structure comprising a plurality of carbon nanotubes oriented along the same direction, and angles between a polarizing direction of the polarized light and an oriented direction of the plurality of carbon nanotubes is adjustable.