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Title: Tailoring morphology to control defect structures in ZnO electrodes for high-performance supercapacitor devices
Authors: Najib, S.
Bakan, F.
Abdullayeva, N
Bahariqushchi, R.
Kasap, S
Franzò, G.
Sankır, Mehmet
Demirci Sankır, Nurdan
Mirabella, S.
Erdem, E.
Keywords: Vanadium Pentoxide 
 Lithium-ion Batteries 
Issue Date: Aug-2020
Publisher: Royal Society of Chemistry
Source: Najib, S., Bakan, F., Abdullayeva, N., Bahariqushchi, R., Kasap, S., Franzò, G., ... and Erdem, E. (2020). Tailoring morphology to control defect structures in ZnO electrodes for high-performance supercapacitor devices. Nanoscale, 12(30), 16162-16172.
Abstract: Zinc oxide (ZnO) nanostructures were synthesized in the form of nanoparticles, nanoflowers and nanourchins. Structural, electronic and optical characterization of the samples was performed via standard techniques such as X-ray diffraction (XRD), scanning electron microscopy (SEM), photoluminescence, Raman and ultraviolet-visible (UV-Vis) spectroscopy. Point defect structures which are specific to each morphology have been investigated in terms of their concentration and location via state-of-the-art electron paramagnetic resonance (EPR) spectroscopy. According to the core-shell model, all the samples revealed core defects; however, the defects on the surface are smeared out. Finally, all three morphologies have been tested as electrode materials in a real supercapacitor device and the performance of the device, in particular, the specific capacitance and the storage mechanism, has been mediated by the point defects. Morphology-dependent defective ZnO electrodes enable the monitoring of the working principle of the supercapacitor device ranging from electric double-layer capacitors (EDLC) to pseudo-supercapacitors. © 2020 The Royal Society of Chemistry.
ISSN: 20403364
Appears in Collections:Malzeme Bilimi ve Nanoteknoloji Mühendisliği Bölümü / Department of Material Science & Nanotechnology Engineering
PubMed İndeksli Yayınlar Koleksiyonu / PubMed Indexed Publications Collection
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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