From three-dimensional flower-like α-Ni(OH)2 nanostructures to hierarchical porous NiO nanoflowers: Microwave-assisted fabrication and supercapacitor properties

Yang Ren; Lian Gao

doi:10.1111/j.1551-2916.2010.04090.x

From three-dimensional flower-like α-Ni(OH)₂ nanostructures to hierarchical porous NiO nanoflowers: Microwave-assisted fabrication and supercapacitor properties

Yang Ren
, Lian Gao

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

212 Citations (Scopus)

Abstract

A facile method is presented to prepare flower-like α-Ni(OH) ₂ involving only microwave heating of nickel nitrate hydrate in ethanol solvent without any hard/soft templates or precipitate-controlling agents. After calcination procedure, hierarchical and porous NiO nanoflowers with large BET-specific surface areas and controlled pore-size distributions are readily fabricated. A possible formation mechanism is proposed based on self-assembly under microwave heating. The structure, morphology, and crystalline phase of the products are characterized by transmission electron microscopy (TEM), X-ray diffraction, thermogravimetric analysis, Fourier transform infrared spectroscopy, and N₂ adsorption/desorption isotherm analysis. TEM reveals that the obtained NiO nanoflowers have uniform size and are composed of sheet-like petals that are built up from nanocrystals. The resultant NiO nanostructures present a specific capacitance as high as 277 F/g and good cycling stability. © 2010 The American Ceramic Society.

Original language	English
Pages (from-to)	3560-3564
Journal	Journal of the American Ceramic Society
Volume	93
Issue number	11
DOIs	https://doi.org/10.1111/j.1551-2916.2010.04090.x
Publication status	Published - Nov 2010
Externally published	Yes

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Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

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title = "From three-dimensional flower-like α-Ni(OH)2 nanostructures to hierarchical porous NiO nanoflowers: Microwave-assisted fabrication and supercapacitor properties",

abstract = "A facile method is presented to prepare flower-like α-Ni(OH) 2 involving only microwave heating of nickel nitrate hydrate in ethanol solvent without any hard/soft templates or precipitate-controlling agents. After calcination procedure, hierarchical and porous NiO nanoflowers with large BET-specific surface areas and controlled pore-size distributions are readily fabricated. A possible formation mechanism is proposed based on self-assembly under microwave heating. The structure, morphology, and crystalline phase of the products are characterized by transmission electron microscopy (TEM), X-ray diffraction, thermogravimetric analysis, Fourier transform infrared spectroscopy, and N2 adsorption/desorption isotherm analysis. TEM reveals that the obtained NiO nanoflowers have uniform size and are composed of sheet-like petals that are built up from nanocrystals. The resultant NiO nanostructures present a specific capacitance as high as 277 F/g and good cycling stability. {\textcopyright} 2010 The American Ceramic Society.",

author = "Yang Ren and Lian Gao",

note = "Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected]. ",

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From three-dimensional flower-like α-Ni(OH)₂ nanostructures to hierarchical porous NiO nanoflowers: Microwave-assisted fabrication and supercapacitor properties. / Ren, Yang; Gao, Lian.
In: Journal of the American Ceramic Society, Vol. 93, No. 11, 11.2010, p. 3560-3564.

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

TY - JOUR

T1 - From three-dimensional flower-like α-Ni(OH)2 nanostructures to hierarchical porous NiO nanoflowers

T2 - Microwave-assisted fabrication and supercapacitor properties

AU - Ren, Yang

AU - Gao, Lian

N1 - Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

PY - 2010/11

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N2 - A facile method is presented to prepare flower-like α-Ni(OH) 2 involving only microwave heating of nickel nitrate hydrate in ethanol solvent without any hard/soft templates or precipitate-controlling agents. After calcination procedure, hierarchical and porous NiO nanoflowers with large BET-specific surface areas and controlled pore-size distributions are readily fabricated. A possible formation mechanism is proposed based on self-assembly under microwave heating. The structure, morphology, and crystalline phase of the products are characterized by transmission electron microscopy (TEM), X-ray diffraction, thermogravimetric analysis, Fourier transform infrared spectroscopy, and N2 adsorption/desorption isotherm analysis. TEM reveals that the obtained NiO nanoflowers have uniform size and are composed of sheet-like petals that are built up from nanocrystals. The resultant NiO nanostructures present a specific capacitance as high as 277 F/g and good cycling stability. © 2010 The American Ceramic Society.

AB - A facile method is presented to prepare flower-like α-Ni(OH) 2 involving only microwave heating of nickel nitrate hydrate in ethanol solvent without any hard/soft templates or precipitate-controlling agents. After calcination procedure, hierarchical and porous NiO nanoflowers with large BET-specific surface areas and controlled pore-size distributions are readily fabricated. A possible formation mechanism is proposed based on self-assembly under microwave heating. The structure, morphology, and crystalline phase of the products are characterized by transmission electron microscopy (TEM), X-ray diffraction, thermogravimetric analysis, Fourier transform infrared spectroscopy, and N2 adsorption/desorption isotherm analysis. TEM reveals that the obtained NiO nanoflowers have uniform size and are composed of sheet-like petals that are built up from nanocrystals. The resultant NiO nanostructures present a specific capacitance as high as 277 F/g and good cycling stability. © 2010 The American Ceramic Society.

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M3 - RGC 21 - Publication in refereed journal

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