Carbon nanotubes and reduced graphene oxide to construct high-rate graphite electrodes

Abstract:

_{: By arranging the Carbon nanotubes (CNTs) macrofilm (CMF) on the meta copper foil evenly,which is made into compositecurrent collector (Cu-CMF),to improve the associativity of active substance with current collector, reduce the interfacial resistance of the battery. Mingle the reduced graphene oxide(rGO)in active substance graphite to increase the contact point between graphite particles of active substance, which help obtain the high specific capacity and chemical stability battery. Characterization was executed by scanning electron microscopy(SEM) and electrochemical testing. The results show that the graphite electrode has a specific capacity of 102.7 mAh g^-1 at a ratio of 2 C based on Cu-CMF composite collector mingle with rGO, which is the 3.7 times(27.4 mAh g^-1) of the undoped graphite electrode based on copper foil collector. It shows the excellent rate capability.}