Self-assembly LiFePO4/polyaniline composite cathode materials with inorganic acids as dopants for lithium-ion batteries

► Fabricate LiFePO4/polyaniline composite cathodes via a self-assembly process. ► Use inorganic acids as dopants for polyaniline. ► Dopant in polyaniline shows a strong dependence on the electrochemical performance. ► Conducting polymer promotes charge/discharge behavior of LiFePO4.