Effect of lithium difluoro(oxalato)borate and heptamethyldisilazane with different concentrations as additives on cycling performance of LiMn2O4 is studied and evaluated at 25 degrees C and 60 degrees C by cyclic voltammetry (CV) test, linear sweep voltage (LSV) test, TG-DSC analysis, conductivity, electrochemical impedance spectroscopy (EIS) and charge-discharge measurements. The results show that the addition of heptamethyldisilazane does not influence the electrochemical performance of LiMn2O4 electrode and the conductivity of original electrolyte basically. What is more, 2 vol.% HMDS can apparently improve the cycling performance of LiMn2O4 at room and elevated temperature, while 6 vol.% HMDS and 0.2 M LiDFOB in the electrolyte have not achieved the desired effect, and even deteriorated the cycling performance of LiMn2O4/Li half cells. When the concentration of the additive is 2 vol.%, the battery of LiPF6-based electrolyte with HMDS additive shows perfect cycling performance at room temperature at 2 C rate, and the capacity fading is only 3.8 mAh g(-1) after 200 cycles. Published by Elsevier B.V.