Acta Metallurgica Sinica (English Letters) ›› 2021, Vol. 34 ›› Issue (3): 383-389.DOI: 10.1007/s40195-020-01177-y

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Hydrothermal Preparation of Homogeneous Cobalt Oxide Nanomaterials as Stable Anodes for Superior Lithium Ion Batteries

Junke Ou1(), Shugen Wu2, Hao Wang3   

  1. 1Institute for Advanced Study, Chengdu University, Chengdu 610106, China
    2Zhanglan Honors College, Chengdu University, Chengdu 610106, China
    3School of Mechanical Engineering, Chengdu University, Chengdu 610106, China
  • Received:2020-09-19 Revised:2020-11-04 Accepted:2020-11-19 Online:2021-03-10 Published:2021-03-10
  • Contact: Junke Ou
  • About author:Junke Ou, ojk0001@163.com

Abstract:

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.

Key words: Co3O4, Hydrothermal synthesis, Anode, Lithium ion batteries