Sie befinden Sich nicht im Netzwerk der Universität Paderborn. Der Zugriff auf elektronische Ressourcen ist gegebenenfalls nur via VPN oder Shibboleth (DFN-AAI) möglich. mehr Informationen...
Effects of bioactive compounds on the morphology and surface chemistry of MoO3/ZnMoO4 nanocomposite for supercapacitor
Ist Teil von
Journal of materials science, 2020-06, Vol.55 (18), p.7743-7759
Ort / Verlag
New York: Springer US
Erscheinungsjahr
2020
Link zum Volltext
Quelle
SpringerLink
Beschreibungen/Notizen
Over recent decades, considerable breakthroughs for supercapacitors have been reported particularly related to electrode material synthesis. In this study, spherical nanoshaped MoO
3
/ZnMoO
4
electrode material was synthesized and functionalized by greener organic–inorganic framework. Here, we used
E
.
cognata
as a source of organic compounds. According to synthesis approach, Zn(O
2
CCH
3
)
2
(H
2
O)
2
and Mo
2
(O
2
CCH
3
)
4
inorganic complex was treated with bioactive organic compounds and thermally annealed at high temperature to obtain MoO
3
/ZnMoO
4
nanocomposite. Formation of MoO
3
/ZnMoO
4
was confirmed by X-ray diffraction and energy-dispersive spectroscopy, whereas X-ray photoelectron spectroscopy and Fourier transform infrared spectroscopy revealed organic functional groups of synthesized material. Spherical shaped MoO
3
/ZnMoO
4
nanocomposite revealed dual band gap at lower energies (eV) of 2.43 and 3.58 by Tauc equation. Furthermore, the synthesized material was scrutinized by field emission scanning electron microscopy. The good supercapacitive features were observed with specific capacitance of 263 F/g and 110 F/g by cyclic voltammetry and galvanostatic charge–discharge measurements, respectively. What is more, electrochemical impedance spectroscopy revealed lower solution resistance (
R
s
) value of 0.4 Ω due to additional electron pathways provided by organic species. Therefore, the current study demonstrated that organic template-derived MoO
3
/ZnMoO
4
nanocomposite could be a potential candidate for electrochemical supercapacitor.