Carbon sheet

Abstract

Provided is a material that has excellent handleability and processability, and that when used as a support for a different material, enables support of the different material up to an inner part thereof. A carbon sheet contains one or more carbon nanotubes and has a porosity of not less than 48% and not more than 90%. The carbon sheet preferably includes: a porous substrate made from carbon; and the carbon nanotubes, attached to the porous substrate. The carbon nanotubes contained in the carbon sheet are preferably single-walled carbon nanotubes. Moreover, the carbon nanotubes contained in the carbon sheet preferably have a nitrogen adsorption specific surface area of 600 m2/g or more.

1 . A carbon sheet comprising one or more carbon nanotubes and having a porosity of not less than 48% and not more than 90%. 
     
     
         2 . The carbon sheet according to  claim 1 , comprising: a porous substrate made from carbon; and the carbon nanotubes, attached to the porous substrate. 
     
     
         3 . A carbon sheet comprising one or more carbon nanotubes and having a void fraction of not less than 40% and not more than 95%. 
     
     
         4 . The carbon sheet according to  claim 1 , wherein the carbon nanotubes are single-walled carbon nanotubes. 
     
     
         5 . The carbon sheet according to  claim 1 , wherein the carbon nanotubes have a nitrogen adsorption specific surface area of 600 m 2 /g or more. 
     
     
         6 . The carbon sheet according to  claim 1 , composed of only the carbon nanotubes. 
     
     
         7 . The carbon sheet according to  claim 3 , wherein the carbon nanotubes are single-walled carbon nanotubes. 
     
     
         8 . The carbon sheet according to  claim 3 , wherein the carbon nanotubes have a nitrogen adsorption specific surface area of 600 m 2 /g or more. 
     
     
         9 . The carbon sheet according to  claim 3 , composed of only the carbon nanotubes. 
     
     
         10 . The carbon sheet according to  claim 3 , having a void fraction of not less than 42%.