A facile method for preparing mesoporous perforated Co₃O₄ nanoparticles with hollow channels and a thin carbon layer was newly designed and achieved with sacrificial carbon nanotube (CNT) templates. The threaded Co₃O₄ nanoparticles on the CNTs were fabricated through a hybridization process, and a subsequent calcination process produced mesoporous perforated Co₃O₄ nanoparticles. With a finely tuned calcination, CNTs were sacrificed to generate hollow channels in the Co₃O₄ nanoparticles and to provide a carbon source for the formation of a few nm-thick carbon layer on the surface of the Co₃O₄ nanoparticles simultaneously. The prepared mesoporous perforated Co₃O₄ nanoparticles with a robust electronic conductive layer enabled not only an enhanced electrochemical reactivity from the greatly increased contact area between the electrolyte and electrode but also a high electronic conductivity of the overall electrode so that excellent electrochemical performances (1115.1 mA h g⁻¹ after 100 cycles; 595.9 mA h g⁻¹ @ 5 C rate) were successfully achieved in the anode application of a lithium-ion battery.

新设计了一种简便的制备具有空心通道和薄碳层的中孔多孔Co ₃ O ₄纳米颗粒的方法，并使用牺牲碳纳米管（CNT）模板实现了该方法。通过杂交过程在CNT上制备了带螺纹的Co ₃ O ₄纳米颗粒，随后的煅烧过程产生了中孔的穿孔的Co ₃ O ₄纳米颗粒。通过微调煅烧，牺牲碳纳米管以在Co ₃ O ₄纳米颗粒中产生空心通道，并为在Co ₃ O ₄表面上形成几纳米厚的碳层提供碳源。纳米粒子同时。所制备的具有坚固的电子导电层的介孔多孔Co ₃ O ₄纳米颗粒不仅能够通过大大增加电解质与电极之间的接触面积来增强电化学反应性，而且还能够使整个电极具有较高的电子电导率，从而具有出色的电化学性能（1115.1毫安汞柱^-1后100个循环;595.9毫安ħ克^-1 @ 5℃速率）在锂离子电池的阳极应用中成功地实现了。