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Highly Ordered Mesoporous Cobalt Oxide Nanostructures: Synthesis, Characterisation, Magnetic Properties, and Applications for Electrochemical Energy Devices
- Issue Date
- 2010
- Publisher
- WILEY-V C H VERLAG GMBH
- Keywords
- cobalt; fuel cells; lithium ion battery; magnetic properties; mesoporous materials; supercapacitor
- Citation
- CHEMISTRY-A EUROPEAN JOURNAL, v.16, no.36, pp 11020 - 11027
- Pages
- 8
- Indexed
- SCI
SCIE
SCOPUS
- Journal Title
- CHEMISTRY-A EUROPEAN JOURNAL
- Volume
- 16
- Number
- 36
- Start Page
- 11020
- End Page
- 11027
- ISSN
- 0947-6539
1521-3765
- Abstract
- Highly ordered mesoporous Co3O4 nanostructures were prepared using KIT-6 and SBA-15 silica as hard templates. The structures were confirmed by small angle X-ray diffraction, high resolution transmission electron microscopy, and N-2 adsorption-desorption isotherm analysis. Both KIT-6 cubic and SBA-15 hexagonal mesoporous Co3O4 samples exhibited a low Neel temperature and bulk antiferromagnetic coupling due to geometric confinement of antiferromagnetic order within the nanoparticles. Mesoporous Co3O4 electrode materials have demonstrated the high lithium storage capacity of more than 1200 rnAhg(-1) with an excellent cycle life. They also exhibited a high specific capacitance of 370 Fg(-1) as electrodes in supercapacitors.
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