In this study, uniform Co₃O₄ nanoparticles are prepared via a simple and facile hydrothermal synthesis without calcination treatment. When the Co₃O₄ nanomaterials are investigated as anodes for lithium ion batteries, a good electrochemical property is achieved. Particularly, the reversible capacity of the as-synthesized Co₃O₄ nanoparticle has a significant growth from 383 mAh g⁻¹ of the initial cycle to 471 mAh g⁻¹ of the 300th cycle at 2 A g⁻¹. Moreover, when it recovers to 50 mA g⁻¹ after different current densities, a superior reversible capacity of 695 mAh g⁻¹ can be reached. Such favorable electrochemical properties will make the as-obtained Co₃O₄ have a good application prospect as anode material for lithium ion batteries.

在这项研究中，通过简单而又容易的水热合成，无需煅烧处理即可制备出均匀的Co ₃ O ₄纳米颗粒。当研究Co ₃ O ₄纳米材料作为锂离子电池的负极时，可获得良好的电化学性能。特别地，所合成的Co ₃ O ₄纳米颗粒的可逆容量从初始循环的383 mAh g ^-1到在第2 A g ^-1的第300次循环的471 mAh g ^-1显着增长。此外，当在不同的电流密度下恢复到50 mA g ^-1时，可逆容量为695 mAh g ^-1可以到达。这样的良好的电化学性能将使得所获得的Co ₃ O ₄作为锂离子电池的负极材料具有良好的应用前景。