Abstract
Template-driven strategy has been widely used to synthesize inorganic nano/micro materials. Here, we used a bottom-up controlled synthesis route to develop a powerful solution-based method of fabricating three-dimensional (3D), hierarchical, porous-Co3O4 superstructures that exhibit the morphology of flower-like microspheres (hereafter, RT-Co3O 4). The gram-scale RT-Co3O4 was facilely prepared using one-pot synthesis with bacterial templating at room temperature. Large-surface-area RT-Co3O4 also has a noticeable pseudocapacitive performance because of its high mass loading per area (~10 mg cm-2), indicating a high capacitance of 214 F g-1 (2.04 F cm-2) at 2 Ag-1 (19.02 mAcm-2), a Coulombic efficiency averaging over 95%, and an excellent cycling stability that shows a capacitance retention of about 95% after 4,000 cycles.
Original language | English |
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Article number | 2325 |
Journal | Scientific reports |
Volume | 3 |
DOIs | |
Publication status | Published - 2013 |
Externally published | Yes |
Bibliographical note
Funding Information:This research was supported by the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT and future Planning (2010-0002533, 2012R1A2A2A01045382, and 2012R1A1A2000910) and by the Ministry of Education (2009-0094046).
ASJC Scopus subject areas
- General