Ultrafine CoO particles immobilized into the mesopores of three‐dimensional cubic bimodal ordered mesoporous carbon CMK‐9 is successfully prepared by using a combination of nanocasting and wet‐impregnation methods. It is found that the cubic bimodal interconnected mesoporous framework of CMK‐9 plays a crucial role in achieving the excellent electrochemical performances by assisting the rapid mass and charge transfer. Among the prepared nanocomposites, CoO(10)@CMK‐9 delivers a discharge capacity of 830 mAh g⁻¹ after 200 cycles at a current density of 100 mA g⁻¹ in lithium‐ion batteries. At a higher current density of 1000 mA g⁻¹, the anode presents an outstanding discharge capacity of 636 mAh g⁻¹ after 200 cycles. In sodium‐ion batteries, the anode provides a discharge capacity of 296 mAh g⁻¹ after 250 cycles at a current density of 100 mA g⁻¹. The remarkable performances of CoO(10)@CMK‐9 demonstrate the promising potentials of the nanocomposite as the anode for rechargeable batteries.

中文翻译：

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洞悉限制在3D双峰有序介孔碳CMK-9阳极中的超细CoO纳米颗粒的优异锂存储特性。

结合纳米浇铸和湿法浸渍法成功地制备了固定在三维立方双峰有序介孔碳CMK-9介孔中的超细CoO颗粒。发现CMK-9的立方双峰互连介孔骨架通过协助快速的质量和电荷转移，在实现出色的电化学性能中起着至关重要的作用。在制备的纳米复合材料中，CoO（10）@ CMK-9在锂离子电池中经过200个循环后，在100 mA g ^-1的电流密度下可提供830 mAh g ^-1的放电容量。在1000 mA g ^-1的较高电流密度下，阳极呈现出636 mAh g ^-1的出色放电容量200个周期后。在钠离子电池中，阳极在250次循环后以100 mA g ^-1的电流密度提供296 mAh g ^-1的放电容量。CoO（10）@ CMK-9的卓越性能证明了纳米复合材料作为可再充电电池阳极的潜力。