Template-free synthesis of Se-nanorods-rGO nanocomposite for application in supercapacitors

Zafar Khan Ghouri; Moaaed Motlak; Shagufta Afaq; Nasser A.M. Barakat; Ahmed Abdala

doi:10.1515/ntrev-2019-0057

Template-free synthesis of Se-nanorods-rGO nanocomposite for application in supercapacitors

Zafar Khan Ghouri, Moaaed Motlak, Shagufta Afaq, Nasser A.M. Barakat, Ahmed Abdala^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

15 Citations (Scopus)

Abstract

Both selenium and reduced graphene oxide have low specific capacitance due to their chemical nature. Nevertheless, their specific capacitance could be enhanced by hybridizing Se nanomaterials with reduced graphene oxide via formation of electrochemical double layer at their interfacial area. Therefore, novel Se-nanorods/rGO nanocomposite was successfully synthesized by template free hot reflux route starting with graphene oxide and selenium dichloride. The composite of rGO decorated by Se-nanorods is characterized using X-ray diffractometry (XRD), Raman spectroscopy, Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and nitrogen adsorption-desorption. The unique architecture of the composite exhibits high specific capacitance of 390 F/g at 5 mV/s scan rate in 1.0 M KOH solution with ~ 90% cyclic stability after 5000 cycles making it very promising electrode material for supercapacitor applications.

Original language	English
Pages (from-to)	661-670
Number of pages	10
Journal	Nanotechnology Reviews
Volume	8
Issue number	1
DOIs	https://doi.org/10.1515/ntrev-2019-0057
Publication status	Published - 31 May 2019
Externally published	Yes

Keywords

Graphene Oxide
Nanocomposites
Nanorods
Pseudocapacitor
Selenium

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title = "Template-free synthesis of Se-nanorods-rGO nanocomposite for application in supercapacitors",

abstract = "Both selenium and reduced graphene oxide have low specific capacitance due to their chemical nature. Nevertheless, their specific capacitance could be enhanced by hybridizing Se nanomaterials with reduced graphene oxide via formation of electrochemical double layer at their interfacial area. Therefore, novel Se-nanorods/rGO nanocomposite was successfully synthesized by template free hot reflux route starting with graphene oxide and selenium dichloride. The composite of rGO decorated by Se-nanorods is characterized using X-ray diffractometry (XRD), Raman spectroscopy, Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and nitrogen adsorption-desorption. The unique architecture of the composite exhibits high specific capacitance of 390 F/g at 5 mV/s scan rate in 1.0 M KOH solution with ~ 90% cyclic stability after 5000 cycles making it very promising electrode material for supercapacitor applications.",

keywords = "Graphene Oxide, Nanocomposites, Nanorods, Pseudocapacitor, Selenium",

author = "Ghouri, {Zafar Khan} and Moaaed Motlak and Shagufta Afaq and Barakat, {Nasser A.M.} and Ahmed Abdala",

note = "Publisher Copyright: {\textcopyright} 2019 Z. Khan Ghouri et al., published by De Gruyter 2019.",

year = "2019",

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doi = "10.1515/ntrev-2019-0057",

language = "English",

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journal = "Nanotechnology Reviews",

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AU - Ghouri, Zafar Khan

AU - Motlak, Moaaed

AU - Afaq, Shagufta

AU - Barakat, Nasser A.M.

AU - Abdala, Ahmed

PY - 2019/5/31

Y1 - 2019/5/31

N2 - Both selenium and reduced graphene oxide have low specific capacitance due to their chemical nature. Nevertheless, their specific capacitance could be enhanced by hybridizing Se nanomaterials with reduced graphene oxide via formation of electrochemical double layer at their interfacial area. Therefore, novel Se-nanorods/rGO nanocomposite was successfully synthesized by template free hot reflux route starting with graphene oxide and selenium dichloride. The composite of rGO decorated by Se-nanorods is characterized using X-ray diffractometry (XRD), Raman spectroscopy, Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and nitrogen adsorption-desorption. The unique architecture of the composite exhibits high specific capacitance of 390 F/g at 5 mV/s scan rate in 1.0 M KOH solution with ~ 90% cyclic stability after 5000 cycles making it very promising electrode material for supercapacitor applications.

AB - Both selenium and reduced graphene oxide have low specific capacitance due to their chemical nature. Nevertheless, their specific capacitance could be enhanced by hybridizing Se nanomaterials with reduced graphene oxide via formation of electrochemical double layer at their interfacial area. Therefore, novel Se-nanorods/rGO nanocomposite was successfully synthesized by template free hot reflux route starting with graphene oxide and selenium dichloride. The composite of rGO decorated by Se-nanorods is characterized using X-ray diffractometry (XRD), Raman spectroscopy, Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and nitrogen adsorption-desorption. The unique architecture of the composite exhibits high specific capacitance of 390 F/g at 5 mV/s scan rate in 1.0 M KOH solution with ~ 90% cyclic stability after 5000 cycles making it very promising electrode material for supercapacitor applications.

KW - Graphene Oxide

KW - Nanocomposites

KW - Nanorods

KW - Pseudocapacitor

KW - Selenium

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Template-free synthesis of Se-nanorods-rGO nanocomposite for application in supercapacitors

Abstract

Keywords

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