Mesoporous FePO4 could deliver enhanced specific capacity of 160mAhg−1 at first discharge process, 90% of theoretical capacity of pure FePO4, and 135mAhg−1 in the following cycles at 0.1C rate. At 1 and 3C rates, the capacities are 110 and 85mAhg−1, respectively, which is much higher than that of previously reported for modified FePO4 materials. Electrochemical impedance spectroscopy (EIS) tests proved that mesoporous structure in FePO4 materials enhanced the lithium ion intercalation/deintercalation kinetics as indicated by smaller charge transfer resistance (R ct) of these materials. These results revealed that this mesoporous electrode material can be a potential candidate for high-power energy conversion devices.