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Scalable one-pot bacteria-templating synthesis route toward hierarchical, porous-Co3O4 superstructures for supercapacitor electrodes.

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-Co3O4). 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?A g(-1) (19.02?mA cm(-2)), a Coulombic efficiency averaging over 95%, and an excellent cycling stability that shows a capacitance retention of about 95% after 4,000 cycles.

SUBMITTER: Shim HW

PROVIDER: S-EPMC3728593 | biostudies-literature | 2013

REPOSITORIES: biostudies-literature

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Scalable one-pot bacteria-templating synthesis route toward hierarchical, porous-Co3O4 superstructures for supercapacitor electrodes.

Shim Hyun-Woo HW Lim Ah-Hyeon AH Kim Jae-Chan JC Jang Eunjin E Seo Seung-Deok SD Lee Gwang-Hee GH Kim T Doohun TD Kim Dong-Wan DW

Scientific reports 20130101

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-Co3O4). The gram-scale RT-Co3O4 was facilely prepared using one-pot synthesis with bacterial templating at room temperature. Large-surface-area RT-Co3O4 also ...[more]

PMID: 23900049

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