Abstract
Coralloid and hierarchical Co3O4 nanostructures were synthesized by a facile two-step approach composed of room temperature solution-phase synthesis without any surfactant and calcination of precursor. Owing to the unique structural features, the capacitance of Co3O4 could reach up to 591 F g−1 at a current density of 0.5 A g−1. Especially the cycling stability remained about 97 % after 2000 cycles at a current density of 1 A g−1. These results demonstrated that the coralloid and hierarchical Co3O4 were excellent candidates for electrochemical supercapacitor devices.
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The financial support from the Natural Science Foundation of China (No. 21301007) and the Hong Kong Polytechnic University (No. G-UC35) is acknowledged.
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Wang, X., Wu, X., Xu, B. et al. Coralloid and hierarchical Co3O4 nanostructures used as supercapacitors with good cycling stability. J Solid State Electrochem 20, 1303–1309 (2016). https://doi.org/10.1007/s10008-016-3125-7
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DOI: https://doi.org/10.1007/s10008-016-3125-7