Composite material

Abstract

The disclosure related to a composite material. The composite material includes a free-standing carbon nanotube structure having a plurality of carbon nanotubes and a number of nanoparticles. The nanoparticles are spaced from each other and coated on a surface of each of the carbon nanotubes of the carbon nanotube structure.

1 . A composite material comprising:
 a free-standing carbon nanotube structure comprising a plurality of carbon nanotubes; and   a plurality of nanoparticles spaced from each other and coated on a surface of each of the carbon nanotubes of the carbon nanotube structure.   
     
     
         2 . The composite material as claimed in  claim 1 , wherein a distance between two adjacent nanoparticles are larger than a diameter of each of the nanoparticles, the diameter of each of the nanoparticles is in a range from about 1 nanometer to about 100 nanometers. 
     
     
         3 . The composite material as claimed in  claim 1 , wherein the carbon nanotube structure is a drawn carbon nanotube film comprising a plurality of carbon nanotubes substantially oriented along a direction and joined end to end. 
     
     
         4 . The composite material as claimed in  claim 1 , further comprising a supporting element, wherein edges of the carbon nanotube structure are located on the supporting element, and a center portion of the carbon nantoube structure is suspended. 
     
     
         5 . The composite material as claimed in  claim 4 , wherein the supporting element is a frame. 
     
     
         6 . The composite material as claimed in  claim 1 , wherein the carbon nanotube structure is a pressed carbon nanotube film comprising a plurality of carbon nanotubes, an angle between a primary alignment direction of the carbon nanotubes and a surface of the pressed carbon nanotube film is approximately 0 degrees to approximately 15 degrees. 
     
     
         7 . The composite material as claimed in  claim 1 , wherein the carbon nanotube structure is a flocculated carbon nanotube film comprising a plurality of long, curved, disordered carbon nanotubes entangled with each other. 
     
     
         8 . The composite material as claimed in  claim 1 , wherein the carbon nanotube structure is a linear carbon nanotube structure comprising a plurality of carbon nanotube wires substantially parallel to each other. 
     
     
         9 . The composite material as claimed in  claim 1 , wherein the carbon nanotube structure further comprises a plurality of carbon nanotube wires substantially oriented along a same direction or substantially oriented around an axial direction of the CNT wire. 
     
     
         10 . The composite material as claimed in  claim 1 , wherein the carbon nanotube structure further comprises at least one carbon nanotube wire and at least one carbon nanotube film, the at least one carbon nanotube wire is located on a surface of the at least one carbon nanotube film. 
     
     
         11 . The composite material as claimed in  claim 1 , wherein the carbon nanotube structure is a twisted carbon nanotube wire. 
     
     
         12 . The composite material as claimed in  claim 1 , wherein the carbon nanotube structure is an untwisted carbon nanotube wire. 
     
     
         13 . The composite material as claimed in  claim 1 , wherein the nanoparticles are selected from the group consisting of metal nanoparticles, non-metal nanoparticles, alloy nanoparticles, metallic oxide nanoparticles, polymer nanoparticles, and any combination thereof. 
     
     
         14 . The composite material as claimed in  claim 1 , wherein each of the nanoparticles is adhered to a surface of at least one carbon nanotube. 
     
     
         15 . The composite material as claimed in  claim 1 , wherein each carbon nanotube is totally wrapped by one of the nanoparticles if each carbon nanotube is smaller than each nanoparticle. 
     
     
         16 . A composite material comprising:
 a free-standing carbon nanotube structure comprising a plurality of carbon nanotubes; and   a plurality of nanoparticles spaced from each other and coated on a surface of each of the carbon nanotubes, wherein each of the nanoparticle wraps a part of a surface of at least one carbon nanotube.   
     
     
         17 . The composite material as claimed in  claim 16 , wherein each carbon nanotube is totally wrapped by one of the nanoparticles if each carbon nanotube is smaller than each nanoparticle.