Low-temperature synthesis of CuO-interlaced nanodiscs for lithium ion battery electrodes

Seung Deok Seo, Yun Ho Jin, Seung Hun Lee, Hyun Woo Shim, Dong Wan Kim

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Abstract

In this study, we report the high-yield synthesis of 2-dimensional cupric oxide (CuO) nanodiscs through dehydrogenation of 1-dimensional Cu(OH) 2 nanowires at 60°C. Most of the nanodiscs had a diameter of approximately 500 nm and a thickness of approximately 50 nm. After further prolonged reaction times, secondary irregular nanodiscs gradually grew vertically into regular nanodiscs. These CuO nanostructures were characterized using X-ray diffraction, transmission electron microscopy, and Brunauer-Emmett-Teller measurements. The possible growth mechanism of the interlaced disc CuO nanostructures is systematically discussed. The electrochemical performances of the CuO nanodisc electrodes were evaluated in detail using cyclic voltammetry and galvanostatic cycling. Furthermore, we demonstrate that the incorporation of multiwalled carbon nanotubes enables the enhanced reversible capacities and capacity retention of CuO nanodisc electrodes on cycling by offering more efficient electron transport paths.

Original languageEnglish
Article number397
Pages (from-to)1-7
Number of pages7
JournalNanoscale Research Letters
Volume6
DOIs
Publication statusPublished - 2011 Dec 1

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ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

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