MnF2 particles with the average size of around 26nm have been prepared successfully with NH4HF2 as a fluorine source by a simple solvothermal method. Compared with previous reports, as-prepared MnF2 shows evidently improved cycle performance with a high reversible capability 481.9mAhg−1 at 0.1C for the first cycle and stable discharge capability 530.5mAhg−1 and 359.2mAhg−1 at 0.1C and 1C for 250cycles respectively, which indicates its promising application as anode for lithium-ion batteries.