Lithium manganese oxide(LiMn2O4)is considered as one of the most promising materials for rechargeable Li-ion batteries.Although various technical methods have been proposed for the preparation of LiMn2O4,the solid-state annealing method is the most ready for large-scale commercialization.However,currently,the conventional solid-state method requires high temperature and long reaction time.It is of essential importance to develop more facile techniques to reduce the energy consumption during the preparation of LiMn2O4.In order to realize this objective,the reaction kinetics during the preparation of LiMn2O4 must be enhanced.In this work,for the first time,we developed a novel plasma-enhanced low-temperature solid-state approach to prepare LiMn2O4.Plasma irradiation could significantly enhance the activity of the reactive species,which thus could accelerate the reaction kinetics with lower reaction temperature and shorter reaction time.Compared to the LiMn2O4 prepared by the conventional method,the as-developed plasma-enhanced method generated smaller particle size with improved uniformity.For the Li-ion battery,the LiMn2O4 prepared by the plasma-enhanced method shows superior performance with higher capacity and significantly improved cycling stability.The plasma-enhanced strategy offers a new technique for efficient synthesis of electrode materials and is very promising and ready for large-scale commercialization.