Abstract LiCoO2 nano-particles precursor was synthesized through a mixed-alkalis (LiOH-NaOH) hydrothermal reaction, and finally sintered into LiCoO2 nanobricks with a sickness of ~300 nm. This LiCoO2 nanobrick cathode delivered a specific capacity of 131.8 mAh g−1 at 1 C between 3.0 and 4.2 V and 90% capacity retention after 100 cycles. Those synthesized LiCoO2 nanobricks were further treated by surface Al3+ doping to achieve much enhanced 4.5 V lithium storage capability and cycling stability. EIS results showed the surface Al3+ doping operation can signification decrease the charge-transfer resistances of the LiCoO2 cathodes for both before and after cyclings.

中文翻译：

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用于高倍率锂离子电池的表面铝掺杂LiCoO 2 纳米砖的水热辅助合成

摘要 LiCoO2 纳米颗粒前驱体是通过混合碱 (LiOH-NaOH) 水热反应合成的，最后烧结成厚度约为 300 nm 的 LiCoO2 纳米砖。这种 LiCoO2 纳米砖阴极在 3.0 和 4.2 V 之间在 1 C 下提供了 131.8 mAh g-1 的比容量和 100 次循环后的 90% 容量保持率。这些合成的 LiCoO2 纳米砖通过表面 Al3+ 掺杂进一步处理，以实现大大增强的 4.5 V 锂存储能力和循环稳定性。EIS 结果表明，表面 Al3+ 掺杂操作可以显着降低 LiCoO2 正极在循环前后的电荷转移电阻。