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Keywords:

  • Carbon nanotube composites;
  • Supercapacitors
Thumbnail image of graphical abstract

A new type of supercapacitor electrode is reported, prepared by pressing a carbon nanotube/polyacrylonitrile blend and then pyrolyzing the pellet (see Figure). Although their specific surface area is very low, e.g., 200 m2 g–1, the C/C composites demonstrate high values of capacitance, up to 100 F g–1. The authors propose two explanations for these remarkable values.