To reduce the reaction time, electrical energy consumption, and cost, LiFePO4/C/graphene has been
synthesized by a rapid, one-pot, microwave-assisted hydrothermal method within 15 min at a
temperature of 200oC, followed by sintering at 600oC for 2 h under a H2/Ar (5 : 95, v/v) atmosphere.
The microstructure and morphology of the LiFePO4/C/graphene products were characterized by means
of X-ray diffraction, Raman spectroscopy, field emission scanning electron microscopy, and
transmission electron microscopy. The carbon coated LiFePO4/C nanoparticles, around 200 nm in size,
are thoroughly wrapped by crumpled micrometer-size graphene sheets. In this kind of structure, the
bridging graphene nanosheets can form an effective conducting network and provide interconnected
open pores that favor electrolyte absorption and reduce the diffusion path of the lithium ions. The cyclic
voltammograms, charge/discharge profiles, and AC impedance measurements indicated that the
kinetics of the LiFePO4/C/graphene was better than that of LiFePO4/C. The LiFePO4/C/graphene
composite exhibited a discharge capacity of 165mAh g -1 at 0.1 C and 88mAh g
-1 at 10 C, respectively. Therefore, the LiFePO4/C/graphene composite is a promising candidate for the development of highperformance, cost-effective lithium batteries for the hybrid vehicle and electric vehicle markets.