Environment-modulated crystallization of Cu2O and CuO nanowires by electrospinning and their charge storage properties

Environment-modulated crystallization of Cu2O and CuO nanowires by electrospinning and their charge storage properties

This article reports the synthesis of cuprous oxide (Cu2O) and cupric oxide (CuO) nanowires by controlling the calcination environment of electrospun polymeric nanowires and their charge storage properties. The Cu2O nanowires showed higher surface area (86 m2 g−1) and pore size than the CuO nanowire...

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Main Authors: Harilal, Midhun, Krishnan, Syam G., Pal, Bhupender, Reddy, M. Venkatashamy, Mohd Hasbi, Ab. Rahim, M. M., Yusoff, Rajan, Jose
Format: Article
Language:English
Published: American Chemical Society 2018
Subjects:
QC Physics
QD Chemistry
TA Engineering (General). Civil engineering (General)
Online Access:http://umpir.ump.edu.my/id/eprint/23745/
http://umpir.ump.edu.my/id/eprint/23745/
http://umpir.ump.edu.my/id/eprint/23745/
http://umpir.ump.edu.my/id/eprint/23745/1/Environment-Modulated%20Crystallization%20of%20Cu2O%20and%20CuO%20Nanowires%20by%20Electrospinning%20and%20Their%20Charge%20Storage%20Properties.pdf
id ump-23745
recordtype eprints
spelling ump-237452019-03-04T02:11:01Z http://umpir.ump.edu.my/id/eprint/23745/ Environment-modulated crystallization of Cu2O and CuO nanowires by electrospinning and their charge storage properties Harilal, Midhun Krishnan, Syam G. Pal, Bhupender Reddy, M. Venkatashamy Mohd Hasbi, Ab. Rahim M. M., Yusoff Rajan, Jose QC Physics QD Chemistry TA Engineering (General). Civil engineering (General) This article reports the synthesis of cuprous oxide (Cu2O) and cupric oxide (CuO) nanowires by controlling the calcination environment of electrospun polymeric nanowires and their charge storage properties. The Cu2O nanowires showed higher surface area (86 m2 g−1) and pore size than the CuO nanowires (36 m2 g−1). Electrochemical analysis was carried out in 6 M KOH, and both the electrodes showed battery-type charge storage mechanism. The electrospun Cu2O electrodes delivered high discharge capacity (126 mA h g −1) than CuO (72 mA h g −1) at a current density of 2.4 mA cm −2. Electrochemical impedance spectroscopy measurements show almost similar charge-transfer resistance in Cu2O (1.2 Ω) and CuO (1.6 Ω); however, Cu2O showed an order of magnitude higher ion diffusion. The difference in charge storage between these electrodes is attributed to the difference in surface properties and charge kinetics at the electrode. The electrode also shows superior cyclic stability (98%) and Coulombic efficiency (98%) after 5000 cycles. Therefore, these materials could be acceptable choices as a battery-type or pseudocapacitive electrode in asymmetric supercapacitors. American Chemical Society 2018 Article PeerReviewed pdf en http://umpir.ump.edu.my/id/eprint/23745/1/Environment-Modulated%20Crystallization%20of%20Cu2O%20and%20CuO%20Nanowires%20by%20Electrospinning%20and%20Their%20Charge%20Storage%20Properties.pdf Harilal, Midhun and Krishnan, Syam G. and Pal, Bhupender and Reddy, M. Venkatashamy and Mohd Hasbi, Ab. Rahim and M. M., Yusoff and Rajan, Jose (2018) Environment-modulated crystallization of Cu2O and CuO nanowires by electrospinning and their charge storage properties. Langmuir, 34 (5). pp. 1873-1882. ISSN 0743-7463 https://pubs.acs.org/doi/abs/10.1021/acs.langmuir.7b03576 https://doi.org/10.1021/acs.langmuir.7b03576
repository_type Digital Repository
institution_category Local University
institution Universiti Malaysia Pahang
building UMP Institutional Repository
collection Online Access
language English
topic QC Physics
QD Chemistry
TA Engineering (General). Civil engineering (General)
spellingShingle QC Physics
QD Chemistry
TA Engineering (General). Civil engineering (General)
Harilal, Midhun
Krishnan, Syam G.
Pal, Bhupender
Reddy, M. Venkatashamy
Mohd Hasbi, Ab. Rahim
M. M., Yusoff
Rajan, Jose
Environment-modulated crystallization of Cu2O and CuO nanowires by electrospinning and their charge storage properties
description This article reports the synthesis of cuprous oxide (Cu2O) and cupric oxide (CuO) nanowires by controlling the calcination environment of electrospun polymeric nanowires and their charge storage properties. The Cu2O nanowires showed higher surface area (86 m2 g−1) and pore size than the CuO nanowires (36 m2 g−1). Electrochemical analysis was carried out in 6 M KOH, and both the electrodes showed battery-type charge storage mechanism. The electrospun Cu2O electrodes delivered high discharge capacity (126 mA h g −1) than CuO (72 mA h g −1) at a current density of 2.4 mA cm −2. Electrochemical impedance spectroscopy measurements show almost similar charge-transfer resistance in Cu2O (1.2 Ω) and CuO (1.6 Ω); however, Cu2O showed an order of magnitude higher ion diffusion. The difference in charge storage between these electrodes is attributed to the difference in surface properties and charge kinetics at the electrode. The electrode also shows superior cyclic stability (98%) and Coulombic efficiency (98%) after 5000 cycles. Therefore, these materials could be acceptable choices as a battery-type or pseudocapacitive electrode in asymmetric supercapacitors.
format Article
author Harilal, Midhun
Krishnan, Syam G.
Pal, Bhupender
Reddy, M. Venkatashamy
Mohd Hasbi, Ab. Rahim
M. M., Yusoff
Rajan, Jose
author_facet Harilal, Midhun
Krishnan, Syam G.
Pal, Bhupender
Reddy, M. Venkatashamy
Mohd Hasbi, Ab. Rahim
M. M., Yusoff
Rajan, Jose
author_sort Harilal, Midhun
title Environment-modulated crystallization of Cu2O and CuO nanowires by electrospinning and their charge storage properties
title_short Environment-modulated crystallization of Cu2O and CuO nanowires by electrospinning and their charge storage properties
title_full Environment-modulated crystallization of Cu2O and CuO nanowires by electrospinning and their charge storage properties
title_fullStr Environment-modulated crystallization of Cu2O and CuO nanowires by electrospinning and their charge storage properties
title_full_unstemmed Environment-modulated crystallization of Cu2O and CuO nanowires by electrospinning and their charge storage properties
title_sort environment-modulated crystallization of cu2o and cuo nanowires by electrospinning and their charge storage properties
publisher American Chemical Society
publishDate 2018
url http://umpir.ump.edu.my/id/eprint/23745/
http://umpir.ump.edu.my/id/eprint/23745/
http://umpir.ump.edu.my/id/eprint/23745/
http://umpir.ump.edu.my/id/eprint/23745/1/Environment-Modulated%20Crystallization%20of%20Cu2O%20and%20CuO%20Nanowires%20by%20Electrospinning%20and%20Their%20Charge%20Storage%20Properties.pdf
first_indexed 2023-09-18T22:35:42Z
last_indexed 2023-09-18T22:35:42Z
_version_ 1777416580281401344

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