General synthesis of xLi(2)MnO(3)center dot(1-x)LiMn1/3Ni1/3Co1/3O2 nanomaterials by a molten-salt method: towards a high capacity and high power cathode for rechargeable lithium batteries

Well-crystallized and high-performance xLi(2)MnO(3)center dot(1 - x) LiMn1/3Ni1/3Co1/3O2 (x = 0.3, 0.5, and 0.7) structurally integrated nanomaterials are prepared by a facile molten-salt strategy. The effects of heat-treatment temperature, time, and the molar ratio of KCl flux to reaction precursor on the particle size as well as the electrochemical properties are explored. Our results demonstrate that a 0.5Li(2)MnO(3)center dot 0.5LiMn(1/3)Ni(1/3)Co(1/3)O(2) electrode delivers a high reversible capacity of 313 mA h g(-1) with significant enhancement in the initial coulombic efficiency (87%) at room temperature, exhibits superior rate capability and shows improved electrochemical properties over a wide temperature range, in particular at low temperature.