Coordination competition-driven synthesis of triple-shell hollow α-Fe2O3 microspheres for lithium ion batteries.

Tingmei Zhang, Jianzhong Zheng, Zhiqiang Liang, Bo Zhao, Huajie Zeng, Wei Guo, Liang Zhao, Yinghui Sun, Ibrahim Abdulhalim, Lin Jiang

Research output: Contribution to journalArticlepeer-review

16 Scopus citations

Abstract

Multi-shell hollow structure metal oxide materials, with the larger surface area and short diffusion lengths, are very promising for lithium-ion battery application as anode materials. However, the production of multi-shelled hollow structure is relatively cumbersome, and it is difficult to fabricate multi component metal oxide hollow structures. Herein, we developed a new one-step hydrothermal method for synthesizing α-Fe 2 O 3 triple-shell hollow microspheres (TSHMs) by introducing urea as a coordination competitive agent. The triple-shell hollow structured α-Fe 2 O 3 accommodates large volume change and provides abundant active sites enable it as an ideal material for lithium ion battery applications. We have demonstrated the high specific capacity of 903.6 mA h g −1 at a current density of 500 mA g −1 even after 1000 cycles by using the α-Fe 2 O 3 TSHMs as anode material.

Original languageEnglish
Pages (from-to)151-158
Number of pages8
JournalElectrochimica Acta
Volume306
DOIs
StatePublished - 20 May 2019

Keywords

  • Anode material
  • Hydrothermal method
  • Lithium ion batteries
  • Triple-shell hollow microspheres
  • α-Fe O

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