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Electrochemical Performance of β-Nis@Ni(OH)(2) Nanocomposite for Water Splitting Applications

[Image: see text] Investigation on the formation mechanism of the β-NiS@Ni(OH)(2) nanocomposite electrode for electrochemical water splitting application was attempted with the use of the hydrothermal processing technique. Formation of single-phase β-NiS, Ni(OH)(2) and composite-phase β-NiS@Ni(OH)(2...

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Autores principales: Jansi Rani, Balasubramanian, Dhivya, Nagasundaram, Ravi, Ganesan, Zance, Shankaracharya S., Yuvakkumar, Rathinam, Hong, Sun Ig
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2019
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6648059/
https://www.ncbi.nlm.nih.gov/pubmed/31460123
http://dx.doi.org/10.1021/acsomega.9b00710
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author Jansi Rani, Balasubramanian
Dhivya, Nagasundaram
Ravi, Ganesan
Zance, Shankaracharya S.
Yuvakkumar, Rathinam
Hong, Sun Ig
author_facet Jansi Rani, Balasubramanian
Dhivya, Nagasundaram
Ravi, Ganesan
Zance, Shankaracharya S.
Yuvakkumar, Rathinam
Hong, Sun Ig
author_sort Jansi Rani, Balasubramanian
collection PubMed
description [Image: see text] Investigation on the formation mechanism of the β-NiS@Ni(OH)(2) nanocomposite electrode for electrochemical water splitting application was attempted with the use of the hydrothermal processing technique. Formation of single-phase β-NiS, Ni(OH)(2) and composite-phase β-NiS@Ni(OH)(2) has been thoroughly analyzed by X-ray diffractometer (XRD) spectra. Three different kinds of morphologies such as rock-like agglomerated nanoparticles, uniformly stacked nanogills, and uniform nanoplates for β-NiS, Ni(OH)(2), and β-NiS@Ni(OH)(2) materials, respectively, were confirmed by SEM images. The characteristic vibration modes of β-NiS, Ni(OH)(2), and β-NiS@Ni(OH)(2) nanocomposites were confirmed from Raman and Fourier transform infrared spectra. Near band edge emission and intrinsic vacancies present in the nanocomposites were retrieved by photoluminescence spectra. The optical band gaps of the synthesized nanocomposites were calculated as 2.1, 2.5, and 2.2 eV for β-NiS, Ni(OH)(2), and β-NiS@Ni(OH)(2) products, respectively. The high-performance electrochemical water splitting was achieved for the β-NiS@Ni(OH)(2) nanocomposite as 240 mA/g at 10 mV/s from a linear sweep voltammogram study. The faster charge mobile mechanism of the same electrode was confirmed by electrochemical impedance spectra and a Tafel slope value of 53 mV/dec. The 18 h of stability was achieved with 95% retention, which was also reported for the NiS@Ni(OH)(2) nanocomposite for continuous electrochemical water splitting applications.
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spelling pubmed-66480592019-08-27 Electrochemical Performance of β-Nis@Ni(OH)(2) Nanocomposite for Water Splitting Applications Jansi Rani, Balasubramanian Dhivya, Nagasundaram Ravi, Ganesan Zance, Shankaracharya S. Yuvakkumar, Rathinam Hong, Sun Ig ACS Omega [Image: see text] Investigation on the formation mechanism of the β-NiS@Ni(OH)(2) nanocomposite electrode for electrochemical water splitting application was attempted with the use of the hydrothermal processing technique. Formation of single-phase β-NiS, Ni(OH)(2) and composite-phase β-NiS@Ni(OH)(2) has been thoroughly analyzed by X-ray diffractometer (XRD) spectra. Three different kinds of morphologies such as rock-like agglomerated nanoparticles, uniformly stacked nanogills, and uniform nanoplates for β-NiS, Ni(OH)(2), and β-NiS@Ni(OH)(2) materials, respectively, were confirmed by SEM images. The characteristic vibration modes of β-NiS, Ni(OH)(2), and β-NiS@Ni(OH)(2) nanocomposites were confirmed from Raman and Fourier transform infrared spectra. Near band edge emission and intrinsic vacancies present in the nanocomposites were retrieved by photoluminescence spectra. The optical band gaps of the synthesized nanocomposites were calculated as 2.1, 2.5, and 2.2 eV for β-NiS, Ni(OH)(2), and β-NiS@Ni(OH)(2) products, respectively. The high-performance electrochemical water splitting was achieved for the β-NiS@Ni(OH)(2) nanocomposite as 240 mA/g at 10 mV/s from a linear sweep voltammogram study. The faster charge mobile mechanism of the same electrode was confirmed by electrochemical impedance spectra and a Tafel slope value of 53 mV/dec. The 18 h of stability was achieved with 95% retention, which was also reported for the NiS@Ni(OH)(2) nanocomposite for continuous electrochemical water splitting applications. American Chemical Society 2019-06-13 /pmc/articles/PMC6648059/ /pubmed/31460123 http://dx.doi.org/10.1021/acsomega.9b00710 Text en Copyright © 2019 American Chemical Society This is an open access article published under an ACS AuthorChoice License (http://pubs.acs.org/page/policy/authorchoice_termsofuse.html) , which permits copying and redistribution of the article or any adaptations for non-commercial purposes.
spellingShingle Jansi Rani, Balasubramanian
Dhivya, Nagasundaram
Ravi, Ganesan
Zance, Shankaracharya S.
Yuvakkumar, Rathinam
Hong, Sun Ig
Electrochemical Performance of β-Nis@Ni(OH)(2) Nanocomposite for Water Splitting Applications
title Electrochemical Performance of β-Nis@Ni(OH)(2) Nanocomposite for Water Splitting Applications
title_full Electrochemical Performance of β-Nis@Ni(OH)(2) Nanocomposite for Water Splitting Applications
title_fullStr Electrochemical Performance of β-Nis@Ni(OH)(2) Nanocomposite for Water Splitting Applications
title_full_unstemmed Electrochemical Performance of β-Nis@Ni(OH)(2) Nanocomposite for Water Splitting Applications
title_short Electrochemical Performance of β-Nis@Ni(OH)(2) Nanocomposite for Water Splitting Applications
title_sort electrochemical performance of β-nis@ni(oh)(2) nanocomposite for water splitting applications
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6648059/
https://www.ncbi.nlm.nih.gov/pubmed/31460123
http://dx.doi.org/10.1021/acsomega.9b00710
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