Facile one-pot fabrication of α-Fe2O3 nano-coffee beans by etching along [001] direction for high lithium storage

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • Liangjun Zhou
  • Zhibin Yi
  • Zhenyu Wang
  • Xingzhong Zhao
  • Zhifang Sun
  • Hua Cheng
  • Zhouguang Lu

Detail(s)

Original languageEnglish
Pages (from-to)1187-1195
Journal / PublicationScience China Materials
Volume60
Issue number12
Online published27 Nov 2017
Publication statusPublished - Dec 2017

Abstract

It is a great challenge to finely tune the morphology of iron oxides for energy storage. In this work, we introduced a facile hydrothermal method to obtain single crystalline hematite (α-Fe2O3) nano-coffee beans (NCBs) with the assistance of acetic acid. Interestingly, α-Fe2O3 nanostructures with this special morphology were formed under the effect of Ostwald ripening and oriented etching of H+ ions along [001] direction, which could be proved by the scanning electron microscope /transmission electron microscope and X-ray diffraction. After calcination at high temperature, the as-prepared α-Fe2O3 NCBs were used as potential anode materials, showing a very high reversible capacity of 810 mA h g−1 (0.2 C), excellent cycling stability, and high-rate performance for lithium storage. Hence, in virtue of the good performances, the structural design of nanomaterials would be promoted in the fabrication of electrode materials for lithiumion batteries.

Research Area(s)

  • designed nanostructures, etching, hematite, hydrothermal, lithium storage

Citation Format(s)

Facile one-pot fabrication of α-Fe2O3 nano-coffee beans by etching along [001] direction for high lithium storage. / Zhou, Liangjun; Yi, Zhibin; Lyu, Fucong et al.

In: Science China Materials, Vol. 60, No. 12, 12.2017, p. 1187-1195.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review