Highly Active 2D Layered MoS 2 -rGO Hybrids for Energy Conversion and Storage Applications

Abstract The development of efficient materials for the generation and storage of renewable energy is now an urgent task for future energy demand. In this report, molybdenum disulphide hollow sphere (MoS2-HS) and its reduced graphene oxide hybrid (rGO/MoS2-S) have been synthesized and explored for e...

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Autores principales:	Swagatika Kamila, Bishnupad Mohanty, Aneeya K. Samantara, Puspendu Guha, Arnab Ghosh, Bijayalaxmi Jena, Parlapalli V. Satyam, B. K. Mishra, Bikash Kumar Jena
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/435b5cc197284fb0b1733400fb5c425b
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spelling	oai:doaj.org-article:435b5cc197284fb0b1733400fb5c425b2021-12-02T11:52:38ZHighly Active 2D Layered MoS 2 -rGO Hybrids for Energy Conversion and Storage Applications10.1038/s41598-017-08677-52045-2322https://doaj.org/article/435b5cc197284fb0b1733400fb5c425b2017-08-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-08677-5https://doaj.org/toc/2045-2322Abstract The development of efficient materials for the generation and storage of renewable energy is now an urgent task for future energy demand. In this report, molybdenum disulphide hollow sphere (MoS2-HS) and its reduced graphene oxide hybrid (rGO/MoS2-S) have been synthesized and explored for energy generation and storage applications. The surface morphology, crystallinity and elemental composition of the as-synthesized materials have been thoroughly analysed. Inspired by the fascinating morphology of the MoS2-HS and rGO/MoS2-S materials, the electrochemical performance towards hydrogen evolution and supercapacitor has been demonstrated. The rGO/MoS2-S shows enhanced gravimetric capacitance values (318 ± 14 Fg−1) with higher specific energy/power outputs (44.1 ± 2.1 Whkg−1 and 159.16 ± 7.0 Wkg−1) and better cyclic performances (82 ± 0.95% even after 5000 cycles). Further, a prototype of the supercapacitor in a coin cell configuration has been fabricated and demonstrated towards powering a LED. The unique balance of exposed edge site and electrical conductivity of rGO/MoS2-S shows remarkably superior HER performances with lower onset over potential (0.16 ± 0.05 V), lower Tafel slope (75 ± 4 mVdec−1), higher exchange current density (0.072 ± 0.023 mAcm−2) and higher TOF (1.47 ± 0.085 s−1) values. The dual performance of the rGO/MoS2-S substantiates the promising application for hydrogen generation and supercapacitor application of interest.Swagatika KamilaBishnupad MohantyAneeya K. SamantaraPuspendu GuhaArnab GhoshBijayalaxmi JenaParlapalli V. SatyamB. K. MishraBikash Kumar JenaNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-13 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Swagatika Kamila Bishnupad Mohanty Aneeya K. Samantara Puspendu Guha Arnab Ghosh Bijayalaxmi Jena Parlapalli V. Satyam B. K. Mishra Bikash Kumar Jena Highly Active 2D Layered MoS 2 -rGO Hybrids for Energy Conversion and Storage Applications
description	Abstract The development of efficient materials for the generation and storage of renewable energy is now an urgent task for future energy demand. In this report, molybdenum disulphide hollow sphere (MoS2-HS) and its reduced graphene oxide hybrid (rGO/MoS2-S) have been synthesized and explored for energy generation and storage applications. The surface morphology, crystallinity and elemental composition of the as-synthesized materials have been thoroughly analysed. Inspired by the fascinating morphology of the MoS2-HS and rGO/MoS2-S materials, the electrochemical performance towards hydrogen evolution and supercapacitor has been demonstrated. The rGO/MoS2-S shows enhanced gravimetric capacitance values (318 ± 14 Fg−1) with higher specific energy/power outputs (44.1 ± 2.1 Whkg−1 and 159.16 ± 7.0 Wkg−1) and better cyclic performances (82 ± 0.95% even after 5000 cycles). Further, a prototype of the supercapacitor in a coin cell configuration has been fabricated and demonstrated towards powering a LED. The unique balance of exposed edge site and electrical conductivity of rGO/MoS2-S shows remarkably superior HER performances with lower onset over potential (0.16 ± 0.05 V), lower Tafel slope (75 ± 4 mVdec−1), higher exchange current density (0.072 ± 0.023 mAcm−2) and higher TOF (1.47 ± 0.085 s−1) values. The dual performance of the rGO/MoS2-S substantiates the promising application for hydrogen generation and supercapacitor application of interest.
format	article
author	Swagatika Kamila Bishnupad Mohanty Aneeya K. Samantara Puspendu Guha Arnab Ghosh Bijayalaxmi Jena Parlapalli V. Satyam B. K. Mishra Bikash Kumar Jena
author_facet	Swagatika Kamila Bishnupad Mohanty Aneeya K. Samantara Puspendu Guha Arnab Ghosh Bijayalaxmi Jena Parlapalli V. Satyam B. K. Mishra Bikash Kumar Jena
author_sort	Swagatika Kamila
title	Highly Active 2D Layered MoS 2 -rGO Hybrids for Energy Conversion and Storage Applications
title_short	Highly Active 2D Layered MoS 2 -rGO Hybrids for Energy Conversion and Storage Applications
title_full	Highly Active 2D Layered MoS 2 -rGO Hybrids for Energy Conversion and Storage Applications
title_fullStr	Highly Active 2D Layered MoS 2 -rGO Hybrids for Energy Conversion and Storage Applications
title_full_unstemmed	Highly Active 2D Layered MoS 2 -rGO Hybrids for Energy Conversion and Storage Applications
title_sort	highly active 2d layered mos 2 -rgo hybrids for energy conversion and storage applications
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/435b5cc197284fb0b1733400fb5c425b
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Highly Active 2D Layered MoS 2 -rGO Hybrids for Energy Conversion and Storage Applications

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