Controlled synthesis of anisotropic hollow ZnCo2O4 octahedrons for high-performance lithium storage

Jiaojiao Deng, Xiaoliang Yu, Xianying Qin, Bilu Liu, Yan Bing He, Baohua Li, Feiyu Kang

Research output: Journal article publicationJournal articleAcademic researchpeer-review

39 Citations (Scopus)

Abstract

Hollow micro-/nanostructures of metal oxides have attracted tremendous research attention in energy storage due to their unique structural advantages. Although fabrication of spherical hollow architectures have been intensively reported, rational design and facile synthesis of anisotropic hollow structures are still quite challenging, especially for those complex mixed metal oxides with well-controlled interior structures. Herein, through facile citrate-assisted hydrothermal synthesis and subsequent controlled annealing, well-defined octahedral ZnCo2O4 solid, hollow and yolk-shell micro-/nanostructures were constructed for the first time. When used as anode materials for lithium ion batteries (LIBs), the hollow ZnCo2O4 octahedron exhibits the best lithium storage properties, delivering high discharge capacities of 880 mA h g−1 over 160 cycles at 0.2 A g−1, and 650 mA h g−1 over 300 cycles at 1 A g−1. Moreover, it shows a superior high-rate performance with 60% of the specific capacity maintained even at a high current density of 5 A g−1. These features render the hollow octahedral ZnCo2O4 micro-/nanostructure a promising anode for next generation LIBs.

Original languageEnglish
Pages (from-to)184-190
Number of pages7
JournalEnergy Storage Materials
Volume11
DOIs
Publication statusPublished - Mar 2018
Externally publishedYes

Keywords

  • Anisotropic hollow structure
  • High performance
  • Hydrothermal synthesis
  • Lithium ion battery anode
  • Ternary metal oxide

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Materials Science(all)
  • Energy Engineering and Power Technology

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