Abstract LiMn1.5-yNi0.5-yCo2yO4 (y = 0.05 and 0.1) materials were synthesized at 800 and 900 °C by co-precipitation method. The samples prepared at 800 °C have small particle size (~ 300 nm). The ones at 900 °C showed a double distribution of the particles; one at 800 nm and the other at 1.4 μm. At 1C-rate, the capacity retention after 50 cycles increases from 81% (y = 0.05) and 78% (y = 0.1), for the 800 °C samples, to 98% (y = 0.05) and 95% (y = 0.1), for the 900 °C samples. At high rate capability, the 900 °C samples showed the best electrochemical behavior; the obtained Qdch at 30C-rate were 86.5mAh/g, for LiMn1.45Ni0.45Co0.1O4 and 85mAh/g for LiMn1.4Ni0.4Co0.2O4 with retention of 71.1% and 66.7%, respectively. This good behavior is due to the low electrolyte decomposition, the low metal transition ions dissolution in the electrolyte and the better diffusion and migration of the Li+ in the bulk of the electrodes. The LiMn1.45Ni0.45Co0.1O4 material exhibits the highest rate capability to date with an outstanding power and energy densities of 12.2 kW/kg and 400 Wh/kg. The LiMn1.45Ni0.45Co0.1O4 material is a promising cathode for Li-ion batteries destined to high-power applications.

中文翻译：

---

共沉淀合成 Co 掺杂的 LiMn1.5Ni0.5O4 材料作为锂离子电池的 5 V 阴极，具有用于高功率应用的巨大倍率能力

摘要 LiMn1.5-yNi0.5-yCo2yO4 (y = 0.05 和 0.1) 材料是在 800 和 900 °C 下通过共沉淀法合成的。在 800 °C 下制备的样品具有小粒径 (~ 300 nm)。900 °C 下的颗粒显示出双重分布；一个在 800 nm，另一个在 1.4 μm。在 1C 倍率下，50 次循环后的容量保持率从 800 °C 样品的 81% (y = 0.05) 和 78% (y = 0.1) 增加到 98% (y = 0.05) 和 95% (y = 0.1)，对于 900 °C 的样品。在高倍率能力下，900 °C 的样品表现出最好的电化学行为；在 30C 倍率下获得的 Qdch 对于 LiMn1.45Ni0.45Co0.1O4 为 86.5mAh/g，对于 LiMn1.4Ni0.4Co0.2O4 为 85mAh/g，保留率分别为 71.1% 和 66.7%。这种良好的行为是由于电解质分解低，低金属过渡离子在电解质中的溶解和 Li+ 在电极主体中更好的扩散和迁移。LiMn1.45Ni0.45Co0.1O4 材料具有迄今为止最高的倍率能力，具有 12.2 kW/kg 和 400 Wh/kg 的出色功率和能量密度。LiMn1.45Ni0.45Co0.1O4 材料是用于高功率应用的锂离子电池的有前途的阴极。