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The LiMn 0.5 Fe 0.5 PO 4 /C nanocrystallites with a uniform size (∼50 nm) are successfully prepared by employing a facile solvothermal method at 180°C. Amphiphilic carbonaceous material (ACM) is chosen as the carbon precursor and forms a homogeneous carbon layer covering the LiMn 0.5 Fe 0.5 PO 4 particles. The asprepared LiMn 0. 5 Fe 0. 5 PO 4 /C sample, with a high Brunauer-Emmett-Teller (BET) surface area of 69.3 m 2 g −1 , is used as the cathode material for lithiumion batteries (LIBs) and delivers a reversible capacity of 158 mAh g −1 at 0.05 C. It shows remarkable rate capability with discharge capacities of 130 mAh g −1 at 1 C, 105 mAh g − 1 at 10 C and 99 mAh g − 1 at 30 C. Meanwhile, the material maintains 121 mAh g −1 at 1 C after 150 cycles with 93 % capacity retention. The kinetic behaviors of LiMn 0.5 Fe 0.5 PO 4 /C sample are investigated by high throughout cyclic voltammetry. The small particle size, partial Fe substitution, and homogeneous carbon coating make a synergetic effect on enhancing the sample's electrochemical properties.

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