e-journal

Synthesis and characterization of mesoporous Ni–Co oxy-hydroxides for pseudocapacitor application

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Abstract.
Mesoporous binary nickel–cobalt (Ni–Co) oxy-hydroxides have been obtained through the microwaveassisted
hydrothermal annealing (MAHA) method. The porosity control of the nanostructured Ni–Co
oxy-hydroxide nanoparticles is achieved through adding the pluronic triblock copolymer F127 as the
surfactant. The structural and electrochemical properties of porous Ni–Co oxy-hydroxide nanostructures
are characterized by means of X-ray diffraction (XRD), Brumauer–Emmett–Teller (BET) analysis, transmission
electron microscopy (TEM), thermogravimetric analysis (TGA) and cyclic voltammetry (CV). The
electrochemical measurement demonstrates that the Ni–Co oxy-hydroxides calcined at 200 ◦C are able to
deliver a specific capacitance of 636 F g−1 in 1 M NaOH, suggesting their high potential as a novel electrode
material of pseudocapacitors with good electrochemical reversibility. In the asymmetric supercapacitor
test, the positive electrode is Ni–Co oxy-hydroxide and negative electrode is activated carbon. The specific
energy and power, measured at 2 A g−1, for this asymmetric combination are equal to ca. 17 Wh kg−1
and 1.6 kW kg−1, respectively.

Keywords: Nickel–cobalt oxy-hydroxide; Surfactant; Mesopore; Microwave-assisted hydrothermal; Asymmetric supercapacitor

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Ketersediaan

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Informasi Detail

Judul Seri

Electrochimica Acta

No. Panggil

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Penerbit

New York : Elsevier Ltd.., 2013

Deskripsi Fisik

Electrochimica Acta 94 (2013) 104– 112

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

94 (2013)

Subjek

PSEUDOKAPASITOR

Info Detail Spesifik

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Pernyataan Tanggungjawab

agus

Versi lain/terkait

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