Abstract A peanut-like hierarchical nano/micro architecture LiNi0.5Co0.2Mn0.3O2 cathode material has been successfully prepared by a simple hydrothermal method combined with a high-temperature calcination process. The characterization results show that the H-NCM has high crystallinity, smaller particle size, uniform particle size distribution, higher specific surface area, lower charge transfer resistance and higher lithium ion diffusion coefficient, which are can facilitate its electrochemical properties. The electrochemical test results reveal that the H-NCM material with peanut-like morphology displayed a higher discharge capacity of 176.5 mA h g−1 and 159.9 mA h g−1 at 0.2C and 10C rates, respectively. And exhibited better cycling stability with capacity retention of 90.0% even at 10C rate after 100 cycles. Meanwhile, the H-NCM cathodes exhibited good practical application performances in commercial with exhibit initial discharge capacity of 2084.2 mA h at 1C rate and capacity retention of 92.17% after 500 cycles.

中文翻译：

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合成具有微花生状结构的LiNi0.5Co0.2Mn0.3O2以增强锂离子电池的电化学性能

摘要 采用简单的水热法结合高温煅烧工艺，成功制备了花生状分层纳米/微结构LiNi0.5Co0.2Mn0.3O2正极材料。表征结果表明，H-NCM具有结晶度高、粒径小、粒径分布均匀、比表面积大、电荷转移电阻低和锂离子扩散系数高等优点，有利于其电化学性能。电化学测试结果表明，具有花生状形态的 H-NCM 材料在 0.2C 和 10C 倍率下显示出更高的放电容量，分别为 176.5 mA hg-1 和 159.9 mA hg-1。并且表现出更好的循环稳定性，即使在 10C 倍率下，100 次循环后的容量保持率为 90.0%。同时，