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LiMn2O4/grdphite batteries using LiF additive were fabricated and their electrochemical performance including discharge,cycling and storage performances were tested and compared with LiF-free LiMn2O4/graphite batteries.The LiMn2O4/graphite battery with LiF added shows better capacity(107.5 mAh/g),cycling performance(capacity retention ratio of 93% after 100 cycles),and capacity recovery ratio(98.1%)than the LiF-free battery.The improvement in electrochemical performance of the LiF-added LiMn2O4/graphite battery was due to the fact that LiF can restrain the dissolution of Mn from the spinel LiMn2O4 cathode into the electrolyte,leading to a smaller resistance and polarization.