Carbon nanofiber composites for the electrodes of electrochemical capacitors

Carbon nanofibers (CNFs) with exposed graphite edges were investigated for use as the electrode material of electrochemical capacitors. Among various modifications of CNFs, the olygoaniline-CNF composite showed the largest capacitance of 149 F/g. The formation of ethynylaniline linkages to the edges of KOH-activated CNFs effectively preserved mesopores. The dynamic properties of this material should be superior to those of the capacitors with micropores. (C) 2004 Elsevier B.V. All rights reserved.