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

• Published in: Nanoscale research letters Vol. 6; no. 1; p. 397
• Main Authors: Seo, Seung-Deok, Jin, Yun-Ho, Lee, Seung-Hun, Shim, Hyun-Woo, Kim, Dong-Wan
• Format: Journal Article
• Language: English
• Published: New York Springer New York 26-05-2011; Springer Nature B.V; BioMed Central Ltd; Springer; SpringerOpen
• Subjects: Chemistry and Materials Science; Materials Science; Molecular Medicine; Nano Express; Nanochemistry; Nanoscale Science and Technology; Nanotechnology; Nanotechnology and Microengineering; Cupric Oxide; High Reversible Capacity; Multiwalled Carbon Nanotubes; Electrochemical Performance; Reversible Capacity
• ISSN: 1556-276X; 1931-7573; 1556-276X
• DOI: 10.1186/1556-276X-6-397

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.