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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...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
American Chemical Society
2019
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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. |
format | Online Article Text |
id | pubmed-6648059 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | American Chemical Society |
record_format | MEDLINE/PubMed |
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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