The cylindrical FePO4/MCNTs core-shell composite is synthesized by a micro-emulsion method.
The micro-emulsion uses to disperse the MCNTs and synthesize nano-sized FePO4.
The FePO4/MCNTs composite cathode exhibits high specific capacity and cycling performance.
The 3D conductive network enhances the high rate performance of the FePO4/MCNTs cathode.