Journal
CRYSTENGCOMM
Volume 16, Issue 12, Pages 2395-2403Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c3ce41961d
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Funding
- National Natural Science Foundation of China [21175061, 21375050]
- Natural Science Foundation of Jiangsu province [BK20130481]
- Key Laboratory of Modern Agriculture Equipment and Technology [NZ201109]
- Innovation Project of Science and Technology for College Graduates of Jiangsu Province [CXZZ12_ 0704]
- China Postdoctoral Science Foundation [2012M520998]
- Jiangsu Planned Projects for Postdoctoral Research Funds [1301141C]
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Porous hierarchical broom-like and rod-like Co3O4 nanostructures have been successfully prepared in the presence of a reactable ionic liquid 1-hexadecyl-3-methylimidazolium trifluoroacetate [C(16)mim] CF3COO by a hydrothermal method in combination with calcination of Co(CO3)(0.5)(OH)center dot 0.11H(2)O precursors. During the reaction process, the ionic liquid [C(16)mim] CF3COO performed three roles: as the reactant, template and co-solvent. A possible formation mechanism of the structures was proposed on the basis of the experimental results. After the thermal decomposition treatment of the precursors, the as-obtained porous Co3O4 samples well retain the hierarchical broom-like and rod-like nanostructures. Subsequently, they are applied as the electrode materials for supercapacitors. The electrochemical experiments reveal that the porous hierarchical broom-like Co3O4 nanostructures exhibit a higher capacitance (722.2 F g(-1) at 1 A g(-1)) compared to the porous rod-like Co3O4 nanostructures (191.2 F g(-1) at 1 A g(-1)).
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