Novel Co{sub 3}O{sub 4} porous polyhedrons derived from metal–organic framework toward high performance for electrochemical energy devices

Journal Article · Fri Jul 15 00:00:00 EDT 2016 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1016/J.JSSC.2016.02.009· OSTI ID:22584140

Chen, Youcun ^[1]; Hu, Lin ^[2]

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1. Anqing Normal College, School of Chemistry and Chemical Engineering, Anqing 246011 (China)
2. High Magnetic Field Laboratory, Chinese Academy of Sciences, Hefei 230031 (China)

Co{sub 3}O{sub 4} polyhedrons with porous structure have been synthesized simply by annealing Prussian blue analogue (PBA) Co{sub 3}[Co(CN){sub 6}]{sub 2} polyhedrons at 400 °C in air. The product was characterized by a series of techniques, such as X-ray Diffraction (XRD), Field Emission Scanning Electron Microscopy (FESEM), Transmission Electron Microscopy (TEM), High-resolution TEM (HRTEM), X-ray Photoelectron Spectroscopy (XPS), and Brunauer–Emmett–Teller (BET) gas adsorption. Interestingly, when evaluated as an anode material for lithium-ion batteries (LIBs), the Co{sub 3}O{sub 4} porous polyhedrons manifested high reversible capacity (about 1200 mAh g{sup −1} at 50 mA g{sup −1}) and excellent cycling performance. Moreover, they also exhibited a high specific capacitance of 110 Fg{sup −1} when used as an electrode in the supercapacitor. It is suggested that the special morphology and porous nanostructure lead to the promising electrochemical properties. - Graphical abstract: Novel and complicated mesoporous architectures of Co{sub 3}O{sub 4} have been fabricated by thermal decomposition of Prussian Blue Analog (PBA) Co{sub 3}[Co(CN){sub 6}]{sub 2} polyhedrons which obtained at the room temperature. When Co{sub 3}O{sub 4} product was evaluated for Li-ion batteries (LIBs), they exhibited high reversible capacity of 1000 mAh g{sup −1} with excellent cycle life because of the hollow/porous structure. Display Omitted.

• OSTI ID: 22584140
• Journal Information: Journal of Solid State Chemistry, Vol. 239; Other Information: Copyright (c) 2016 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); ISSN 0022-4596
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
ADSORPTION
CAPACITIVE ENERGY STORAGE EQUIPMENT
CARBON NITRIDES
COBALT OXIDES
ELECTROCHEMISTRY
ELECTRON SCANNING
ELECTRONS
FERROCYANIDES
FIELD EMISSION
LITHIUM ION BATTERIES
NANOSTRUCTURES
ORGANOMETALLIC COMPOUNDS
PERFORMANCE
POROUS MATERIALS
PYROLYSIS
SCANNING ELECTRON MICROSCOPY
TRANSMISSION ELECTRON MICROSCOPY
X RADIATION
X-RAY DIFFRACTION
X-RAY PHOTOELECTRON SPECTROSCOPY