Shape-controlled synthesis of cobalt-based nanocubes, nanodiscs, and nanoflowers and their comparative lithium-storage properties

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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Author(s)

  • Jun Song Chen
  • Ting Zhu
  • Qiu Hong Hu
  • Junjie Gao
  • Fabing Su
  • Shi Zhang Qiao

Detail(s)

Original languageEnglish
Pages (from-to)3628-3635
Journal / PublicationACS Applied Materials and Interfaces
Volume2
Issue number12
Publication statusPublished - 22 Dec 2010
Externally publishedYes

Abstract

Facile hydrothermal methods have been developed to synthesize large Co 3O4 nanocubes, β-Co(OH)2 hexagonal nanodiscs and nanoflowers. Samples are thoroughly characterized by field-emission scanning electron microscopy, transmission electron microscopy, X-ray diffraction, Brunauer-Emmett-Teller method, and thermogravimetric analysis. The Co3O4 nanocubes have an average size of about 350 nm with a perfect cubic shape, and the β-Co(OH)2 nanodiscs are uniform hexagonal platelets, whereas the β-Co(OH)2 nanoflowers are assembled from large sheetlike subunits. After thermal annealing in air at a moderate temperature, the as-prepared β-Co(OH) 2 samples can be converted into spinel Co3O4 without significant alterations in morphology. We have also investigated the comparative lithium storage properties of these three Co3O 4 samples with distinct morphologies. The nanoflower sample shows highly reversible lithium storage capability after 100 charge-discharge cycles. © 2010 American Chemical Society.

Research Area(s)

  • cobalt-based, lithium-ion batteries, nanocube, nanodiscs, nanoflower

Bibliographic Note

Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to lbscholars@cityu.edu.hk.

Citation Format(s)

Shape-controlled synthesis of cobalt-based nanocubes, nanodiscs, and nanoflowers and their comparative lithium-storage properties. / Chen, Jun Song; Zhu, Ting; Hu, Qiu Hong et al.
In: ACS Applied Materials and Interfaces, Vol. 2, No. 12, 22.12.2010, p. 3628-3635.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review