title: 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.
authors.affiliation: Department of Energy Systems Research, Ajou University, Suwon, 443-749, Korea.
authors.forename: Hyun-Woo
authors.initials: HW
authors.lastname: Shim
authors.forename: Ah-Hyeon
authors.initials: AH
authors.lastname: Lim
authors.forename: Jae-Chan
authors.initials: JC
authors.lastname: Kim
authors.forename: Eunjin
authors.initials: E
authors.lastname: Jang
authors.forename: Seung-Deok
authors.initials: SD
authors.lastname: Seo
authors.forename: Gwang-Hee
authors.initials: GH
authors.lastname: Lee
authors.forename: T Doohun
authors.initials: TD
authors.lastname: Kim
authors.forename: Dong-Wan
authors.initials: DW
authors.lastname: Kim
mesh_terms: D003035:Cobalt / Q000737:chemistry*; D025802:Electric Capacitance; D004566:Electrodes; D004581:Electronics / Q000295:instrumentation; D004867:Equipment Design; D019544:Equipment Failure Analysis; D008422:Materials Testing; D053768:Metal Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure; D008837:Micrococcus / Q000737:chemistry* / Q000648:ultrastructure; D054802:Molecular Imprinting / Q000379:methods*; D010087:Oxides / Q000737:chemistry*; D016062:Porosity
chemical_list: D010087:Oxides; D003035:Cobalt; C060728:cobalt oxide
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