Electrochemical lithium ion storage property of C60 encapsulated single-walled carbon nanotubes

This is the first study to investigate the electrochemical Li ion insertion/deinsertion property of C60 encapsulated single-walled carbon nanotubes (SWCNTs) (C60-peapods). It was found that the reversible Li ion storage capacity of the C60-peapod per unit weight is about 1.2 times greater than that of the empty tubes. This suggests that one peapod tube can store almost 1.7 times more reversible Li ions compared to one empty SWCNT tube.