Acta Metallurgica Sinica (English Letters) ›› 2022, Vol. 35 ›› Issue (2): 212-222.DOI: 10.1007/s40195-021-01283-5

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Facile Preparation of NiO@graphene Nanocomposite with Superior Performances as Anode for Li-ion Batteries

Junke Ou1,2(), Shugen Wu3, Lin Yang4, Hao Wang5   

  1. 1Institute for Advanced Study, Chengdu University, Chengdu 610106, China
    2Material Corrosion and Protection Key Laboratory of Sichuan Province, Sichuan University of Science and Engineering, Zigong 643000, China
    3Zhanglan Honors College, Chengdu University, Chengdu 610106, China
    4School of Medicine, Chengdu University, Chengdu 610106, China
    5School of Mechanical Engineering, Chengdu University, Chengdu 610106, China
  • Received:2021-02-08 Revised:2021-04-26 Accepted:2021-06-01 Online:2022-02-10 Published:2021-07-21
  • Contact: Junke Ou
  • About author:Junke Ou, ojk0001@163.com

Abstract:

Transition metal oxides gain considerable research attentions as potential anode materials for lithium ion batteries, but their applications are hindered due to their poor electronic conductivity, weak cycle stability and drastic volume change. Here, a NiO@graphene composite with a unique 3D conductive network structure is prepared through a simple strategy. When applied as anode material for Li-ion batteries, at 50 mA g-1, the NiO@graphene displays a high reversible capacity of 1366 mAh g-1 and a stable cyclability of 205 mAh g-1 after 500 cycles. Even at a high rate of 10 A g-1, it displays a favorable reversible capacity of 711 mAh g-1. Remarkably, when it recovers back to 0.05 A g-1, a reversible capacity of 1741 mAh g-1 is achieved. Thus, the NiO@graphene composite with 3D structure shows good application prospects as an alternative anode for advanced lithium ion batteries.

Key words: Lithium ion batteries, 3D conductive network structure, NiO@graphene composite, Alternative