Coralloid and hierarchical Co3O4 nanostructures used as supercapacitors with good cycling stability |
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| Authors: | Xiuhua Wang Xiaoxiu Wu Bingang Xu Tao Hua |
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| Affiliation: | 1.The Key Laboratory of Functional Molecular Solids, Ministry of Education, College of Chemistry and Materials Science,Anhui Normal University,Wuhu,China;2.Nanotechnology Center, Institute of Textiles and Clothing,The Hong Kong Polytechnic University,Hong Kong,People’s Republic of China |
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| 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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