Preparation of graphene supported flower-like porous 3D ZnO-NiO ternary composites for high capacity anode materials for Li-ion batteries

Ying Huang, Xuefang Chen, Kaichuang Zhang, Xuansheng Feng

Research output: Contribution to journalArticlepeer-review

31 Scopus citations

Abstract

Flower-like ZnO-NiO mesoporous architectures were synthesized through annealing the zinc hydroxide carbonate-nickel hydroxide carbonate composite precursor, which was prepared via a one-pot hydrothermal route. More importantly, we successfully prepared flower-like porous ZnO-NiO/graphene composites by introducing flexible graphene into the flower-like porous ZnO-NiO. In addition, we explore the application of the 3D flower-like ZnO-NiO composite mesoporous architectures and flower-like porous ZnO-NiO/graphene composites as anode materials for lithium ion battery. Electrochemical study presented that the as-prepared flower-like porous ZnO-NiO/graphene composites demonstrate excellent electrochemical performance and cycling stability. The first discharge capacity is 1205.7 mA h/g at a high current density of 300 mA/g. After 50 cycles, the reversible capacity is 452.7 mA h/g at a current density of 300 mA/g and the coulomb efficiency reaches at 99%.The improved electrochemical performances are mainly attributed to its morphological characteristics of mesoporous, nanosheet self-assembling architectures, as well as the addition of graphene. These results suggest that such 3D flower-like porous ZnO-NiO/graphene composites are promising materials for lithium ion battery.

Original languageEnglish
Pages (from-to)13532-13540
Number of pages9
JournalCeramics International
Volume41
Issue number10
DOIs
StatePublished - 7 Jun 2015

Keywords

  • Anode materials
  • Electrochemical performance
  • Graphene
  • ZnO-NiO

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