Morphological and crystalline evolution of nanostructured MNO 2 and its application in lithium-air batteries

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

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Author(s)

  • Tu T. Truong
  • Yuzi Liu
  • Yang Ren
  • Lynn Trahey
  • Yugang Sun

Detail(s)

Original languageEnglish
Pages (from-to)8067-8077
Journal / PublicationACS Nano
Volume6
Issue number9
Publication statusPublished - 25 Sep 2012
Externally publishedYes

Abstract

Single-crystal α-MnO 2 nanotubes have been successfully synthesized by microwave-assisted hydrothermal of potassium permanganate in the presence of hydrochloric acid. The growth mechanism including the morphological and crystalline evolution has been carefully studied with time-dependent X-ray diffraction, electron microscopy, and controlled synthesis. The as-synthesized MnO 2 nanostructures are incorporated in air cathodes of lithium-air batteries as electrocatalysts for the oxygen reduction and evolution reactions. The characterization reveals that the electrodes made of single-crystalline α-MnO 2 nanotubes exhibit much better stability than those made of α-MnO 2 nanowires and δ-MnO 2 nanosheet-based microflowers in both charge and discharge processes. © 2012 American Chemical Society.

Research Area(s)

  • electrochemical catalyst, lithium-air batteries, microwave synthesis, morphological control, nanostructured manganese oxide

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)

Morphological and crystalline evolution of nanostructured MNO 2 and its application in lithium-air batteries. / Truong, Tu T.; Liu, Yuzi; Ren, Yang et al.

In: ACS Nano, Vol. 6, No. 9, 25.09.2012, p. 8067-8077.

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