Lithium intercalation into the shell of 'cylindrical hard deposit'

As the main by-product of fullerene, a novel form of solid carbon - the she ll of the 'cylindrical hard deposit' was synthesized by electrical are disc harge between two carbon electrodes. The results of the electrochemical int ercalation of lithium into the shell in 1 M LiClO4 EC/DEC (50:50) electroly te are presented here. Our results show that the shell has high irreversibl e capacity. Complementary analytical techniques, including X-ray diffractio n, slow scan rate cyclic voltammetry, constant current charge-discharge tes ts and ac impedance investigations, were used for full structural character ization of the shell and the electrochemical intercalation of lithium. (C) 2001 Elsevier Science B.V. All rights reserved.