e-journal

Fabrication of anchored copper oxide nanoparticles on graphene oxide nanosheets via an electrostatic coprecipitation and its application as supercapacitor

---

Abstract.
Copper oxide (CuO) nanoparticles have been synthesized through a sonochemical assisted precipitation
followed by thermal treatment. As prepared CuO nanoparticles have been anchored on surface of
graphene oxide (GO) nanosheets through a simple electrostatic coprecipitation. Prepared samples have
been characterized using X-ray diffraction (XRD), Fourier transform infrared (FTIR), Raman spectroscopy,
X-ray photoelectron spectroscopy (XPS), and energy dispersive X-ray analysis (EDX). Morphology of the
samples has been characterized by field-emission scanning electron microscopy (FESEM) and transmission
electron microscopy (TEM). Symmetric supercapacitors have been assembled in real two-electrode
configurations. Different symmetric configurations including CuO, GO, layer-by-layer coated CuO on GO
network (GO/CuO), and composite (COMP) electrodes have been prepared. Their electrochemical behavior
and supercapacitive performances have been investigated and compared with each other using various
electrochemical methods including cyclic voltammetry, electrochemical impedance spectroscopy, and
chronopotentiometric charge/discharge cycles. The composite material shows better electrochemical
supercapacitive behavior and lower charge transfer resistance compared to other samples. It also shows
better specific capacitance (245 F g−1) at current density of 0.1 A g−1 compared to the pure components
(125 F g−1 for CuO and 120 F g−1 for GO) and the layer-by-layer coated electrodes (155 F g−1). Conducting
charge/discharge measurements for 1000 cycles and in different current densities, it has been found that
the composite material is a promising candidate for supercapacitor application, in terms of cycle ability
and rate capability.

Keywords:
Copper oxide
Graphene oxide
Nanocomposite
Supercapacitor

---

Ketersediaan

Tidak ada salinan data

Informasi Detail

Judul Seri

Electrochimica Acta

No. Panggil

-

Penerbit

New York : Elsevier Ltd.., 2013

Deskripsi Fisik

Electrochimica Acta 88 (2013) 347– 357

Bahasa

English

ISBN/ISSN

-

Klasifikasi

-

Tipe Isi

-

Tipe Media

-

Tipe Pembawa

-

Edisi

-

Subjek

KIMIA MATERIAL

Info Detail Spesifik

-

Pernyataan Tanggungjawab

agus

Versi lain/terkait

Lampiran Berkas

Komentar

---

Anda harus masuk sebelum memberikan komentar