Co3O4 nanocubes homogeneously assembled on few-layer graphene for high energy density lithium-ion batteries

Homogenous Co3O4 nanocubes are successfully fabricated on few-layer graphene sheets (FLGS), while only dispersed and large clusters of Co3O4 can be made on graphene oxide (GO). The Co3O4/FLGS composites exhibit higher stability in lithium-ion storage capacity than Co3O4/GO. The crystal growth mechanism on few-layer graphene and graphene oxide are studied with various characterization methods.424