Journal article
Fabrication of ultra thin CoMoO4 nanosheets modified with chitosan and their improved performance in energy storage device
Dalton Transactions, Vol.44(13), pp.6158-6168
2015
Abstract
Ultrathin nanosheet-assembled cobalt molybdate (CoMoO4) with a mesoporous morphology was synthesized by a urea-assisted solution combustion route at a temperature of 400 °C. The as-prepared CoMoO4 was modified using chitosan cross-linked with glutaraldehyde (glu) and employed as a cathode material in an aqueous hybrid capacitor. The physical and electrochemical behaviour of CoMoO4 modified with chitosan and the as-prepared (chitosan free) CoMoO4 has been compared and discussed. The modified CoMoO4 exhibited excellent electrochemical performance with a specific capacitance of 135 F g-1 at 0.6 A g-1 and an energy density of 31 W h kg-1. It also exhibited good cycling stability with high coulombic efficiency over 2000 cycles retaining a specific capacitance of 81 F g-1 at 3 A g-1, comparatively much better than that of nanostructured chitosan free CoMoO4 which yielded 17 F g-1. The results indicated that chitosan gel strongly adheres to the molybdate moiety of CoMoO4 and increases the capacitance four-fold compared to a chitosan free material. The modified CoMoO4 electrode shows potential for high performance, and is an environmentally friendly and low-cost energy storage device.
Details
- Title
- Fabrication of ultra thin CoMoO4 nanosheets modified with chitosan and their improved performance in energy storage device
- Authors/Creators
- R. Ramkumar (Author/Creator)M. Minakshi (Author/Creator)
- Publication Details
- Dalton Transactions, Vol.44(13), pp.6158-6168
- Publisher
- Royal Society of Chemistry
- Identifiers
- 991005543663707891
- Copyright
- © The Royal Society of Chemistry 2015.
- Murdoch Affiliation
- School of Engineering and Information Technology
- Language
- English
- Resource Type
- Journal article
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- Citation topics
- 2 Chemistry
- 2.62 Electrochemistry
- 2.62.52 Electrode Materials
- Web Of Science research areas
- Chemistry, Inorganic & Nuclear
- ESI research areas
- Chemistry