Catalytic synthesis of a high aspect ratio carbon nanotubes bridging carbon felt composite with improved electrical conductivity and effective surface area

▶ Catalytic synthesis of macroscopic composite carbon nanotubes. ▶ High external surface area carbon nanotubes composite for use as catalyst support. ▶ High mechanical strength macroscopic carbon-carbon composite. ▶ Carbon-carbon composite with high electrical and thermal conductivities. ▶ Fully accessible surface with low residual porosity.