Lithium-manganese-rich–lithiated nickel-manganese-cobalt oxides are advantageous for using in lithium-ion batteries due to low toxicity and high specific capacity but suffer from low high-rate capability. In this paper, characterization and electrochemical testing of 0.5Li₂MnO₃·0.5LiNi_0.5Mn_0.3Co_0.2O₂ (Li_1.2Ni_0.2Mn_0.52Co_0.08O₂) obtained by means of a citric acid–aided route is described. It demonstrates excellent electrochemical performance possessing specific capacity equal to the theoretical value (280 mAh g⁻¹), being able to be discharged with currents of 2240 mA g⁻¹ (8 C), having high coulombic efficiency (~ 99%) even after high-rate tests, and manifesting low capacity fade after high current loads and upon further cycling by 0.1 C currents (0.144 mAh g⁻¹ per cycle).

富含锂锰的锂镍锰钴氧化物由于其低毒性和高比容量而非常适合用于锂离子电池，但其高倍率能力却很低。在本文中，描述了通过柠檬酸辅助途径获得的0.5Li ₂ MnO ₃ ·0.5LiNi _0.5 Mn _0.3 Co _0.2 O ₂（Li _1.2 Ni _0.2 Mn _0.52 Co _0.08 O ₂）的表征和电化学测试。它显示出优异的电化学性能，具有与理论值相同的比容量（280 mAh g ^-1），能够在2240 mA g ^-1（8 C）的电流下放电，即使在高速率测试后也具有高库仑效率（〜99％），并且在高电流负载和进一步循环之后表现出低容量衰减0.1 C电流（每个周期0.144 mAh g ^-1）。