e-journal

Preparation and capacitive properties of the coreeshell structure carbon aerogel microbeads- nanowhisker-like NiO composites

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Abstract.
In current study, nanowhisker-like NiO/carbon aerogel microbead (NiO/CAMB) composites with
chestnut-like coreeshell structure are prepared by in situ encapsulating method. The structure and
morphology of NiO/CAMB are characterized by X-ray diffraction (XRD), scanning electron microscopy
(SEM) and transmission electron microscopy (TEM). Results indicate that the appearance of composite
becomes chestnut-like morphology with coreeshell structure when NiO is coated. Electrochemical
performances of the NiO/CAMB composites with different NiO contents are evaluated by using cyclic
voltammetry (CV), galvanostatic chargeedischarge and electrochemical impedance spectroscopy (EIS).
Results show that the supercapacitive behaviors of NiO/CAMB composites are largely improved due to
the combination of electrical double-layer capacitance of CAMB and pseudo-capacitance based on the
redox reaction of NiO. Especially, the 15%-NiO/CAMB composite exhibits the best capacitive properties,
its specific capacitance is up to 356.2 F g-
1. Besides, the symmetric supercapacitor using 15%-NiO/CAMB
composite as the electrode active material shows stable cycling performance.

Keywords: Carbon aerogel microbeads; Nickel oxide; Coreeshell structure; Supercapacitor; Electrochemical performance

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Ketersediaan

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Informasi Detail

Judul Seri

Journal of Power Sources

No. Panggil

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Penerbit

New York : Elsevier B.V.., 2013

Deskripsi Fisik

Journal of Power Sources 224 (2013) 317-323

Bahasa

English

ISBN/ISSN

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Klasifikasi

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Tipe Isi

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Tipe Media

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Tipe Pembawa

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Edisi

224 (2013)

Subjek

KIMIA KARBON

Info Detail Spesifik

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Pernyataan Tanggungjawab

agus

Versi lain/terkait

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