In Situ Binder-Free and Hydrothermal Growth of Nanostructured NiCo2S4/Ni Electrodes for Solid-State Hybrid Supercapacitors

Herein, we report a comparison of the electrochemical performance of two kinds of NiCo2S4-based electrodes for solid-state hybrid supercapacitors (HSCs). For the binder-free electrode, NiCo2S4 was grown on Ni...

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Autores principales:	M. Mohamed Ismail, Zhong-Yun Hong, M. Arivanandhan, Thomas Chung-Kuang Yang, Guan-Ting Pan, Chao-Ming Huang
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	NiCo<sub>2</sub>S<sub>4</sub> binder-free electrode chemical bath deposition gel electrolyte solid-state hybrid supercapacitor Technology T
Acceso en línea:	https://doaj.org/article/96b5e81ebcf044eebc1a5169625d9e76
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spelling	oai:doaj.org-article:96b5e81ebcf044eebc1a5169625d9e762021-11-11T15:54:47ZIn Situ Binder-Free and Hydrothermal Growth of Nanostructured NiCo<sub>2</sub>S<sub>4</sub>/Ni Electrodes for Solid-State Hybrid Supercapacitors10.3390/en142171141996-1073https://doaj.org/article/96b5e81ebcf044eebc1a5169625d9e762021-11-01T00:00:00Zhttps://www.mdpi.com/1996-1073/14/21/7114https://doaj.org/toc/1996-1073Herein, we report a comparison of the electrochemical performance of two kinds of NiCo<sub>2</sub>S<sub>4</sub>-based electrodes for solid-state hybrid supercapacitors (HSCs). For the binder-free electrode, NiCo<sub>2</sub>S<sub>4</sub> was grown on Ni foam by the chemical bath deposition (CBD) method. For the binder-using electrode, NiCo<sub>2</sub>S<sub>4</sub> powder was synthesized by the hydrothermal method. FESEM images depicted the hierarchical nanostructure of NiCo<sub>2</sub>S<sub>4</sub> synthesized by the hydrothermal method and uniform distribution of nanostructured NiCo<sub>2</sub>S<sub>4</sub> grown on Ni foam by the CBD method. Half-cell studies of both NiCo<sub>2</sub>S<sub>4</sub> electrodes showed them exhibiting battery-type charge storage behavior. To assemble HSCs, NiCo<sub>2</sub>S<sub>4</sub> and activated carbon were used as a positive and negative electrode, respectively. Electrochemical studies of the HSCs showed that the accessible potential window was wide, up to 2.6 V, through cyclic voltammetry (CV) analysis. Chronopotentiometry (CP) studies revealed that the energy and power densities of binder-using HSC were 51.24 Wh/kg and 13 kW/kg at 1 Ag<sup>−1</sup>, respectively, which were relatively higher than those of the binder-free HSC. The binder-free HSC showed 52% cyclic stability, relatively higher than that of the binder-using HSC. Both HSCs, with unique benefits and burdens on energy storage performance, are discussed in this work.M. Mohamed IsmailZhong-Yun HongM. ArivanandhanThomas Chung-Kuang YangGuan-Ting PanChao-Ming HuangMDPI AGarticleNiCo<sub>2</sub>S<sub>4</sub>binder-free electrodechemical bath depositiongel electrolytesolid-state hybrid supercapacitorTechnologyTENEnergies, Vol 14, Iss 7114, p 7114 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	NiCo<sub>2</sub>S<sub>4</sub> binder-free electrode chemical bath deposition gel electrolyte solid-state hybrid supercapacitor Technology T
spellingShingle	NiCo<sub>2</sub>S<sub>4</sub> binder-free electrode chemical bath deposition gel electrolyte solid-state hybrid supercapacitor Technology T M. Mohamed Ismail Zhong-Yun Hong M. Arivanandhan Thomas Chung-Kuang Yang Guan-Ting Pan Chao-Ming Huang In Situ Binder-Free and Hydrothermal Growth of Nanostructured NiCo<sub>2</sub>S<sub>4</sub>/Ni Electrodes for Solid-State Hybrid Supercapacitors
description	Herein, we report a comparison of the electrochemical performance of two kinds of NiCo<sub>2</sub>S<sub>4</sub>-based electrodes for solid-state hybrid supercapacitors (HSCs). For the binder-free electrode, NiCo<sub>2</sub>S<sub>4</sub> was grown on Ni foam by the chemical bath deposition (CBD) method. For the binder-using electrode, NiCo<sub>2</sub>S<sub>4</sub> powder was synthesized by the hydrothermal method. FESEM images depicted the hierarchical nanostructure of NiCo<sub>2</sub>S<sub>4</sub> synthesized by the hydrothermal method and uniform distribution of nanostructured NiCo<sub>2</sub>S<sub>4</sub> grown on Ni foam by the CBD method. Half-cell studies of both NiCo<sub>2</sub>S<sub>4</sub> electrodes showed them exhibiting battery-type charge storage behavior. To assemble HSCs, NiCo<sub>2</sub>S<sub>4</sub> and activated carbon were used as a positive and negative electrode, respectively. Electrochemical studies of the HSCs showed that the accessible potential window was wide, up to 2.6 V, through cyclic voltammetry (CV) analysis. Chronopotentiometry (CP) studies revealed that the energy and power densities of binder-using HSC were 51.24 Wh/kg and 13 kW/kg at 1 Ag<sup>−1</sup>, respectively, which were relatively higher than those of the binder-free HSC. The binder-free HSC showed 52% cyclic stability, relatively higher than that of the binder-using HSC. Both HSCs, with unique benefits and burdens on energy storage performance, are discussed in this work.
format	article
author	M. Mohamed Ismail Zhong-Yun Hong M. Arivanandhan Thomas Chung-Kuang Yang Guan-Ting Pan Chao-Ming Huang
author_facet	M. Mohamed Ismail Zhong-Yun Hong M. Arivanandhan Thomas Chung-Kuang Yang Guan-Ting Pan Chao-Ming Huang
author_sort	M. Mohamed Ismail
title	In Situ Binder-Free and Hydrothermal Growth of Nanostructured NiCo<sub>2</sub>S<sub>4</sub>/Ni Electrodes for Solid-State Hybrid Supercapacitors
title_short	In Situ Binder-Free and Hydrothermal Growth of Nanostructured NiCo<sub>2</sub>S<sub>4</sub>/Ni Electrodes for Solid-State Hybrid Supercapacitors
title_full	In Situ Binder-Free and Hydrothermal Growth of Nanostructured NiCo<sub>2</sub>S<sub>4</sub>/Ni Electrodes for Solid-State Hybrid Supercapacitors
title_fullStr	In Situ Binder-Free and Hydrothermal Growth of Nanostructured NiCo<sub>2</sub>S<sub>4</sub>/Ni Electrodes for Solid-State Hybrid Supercapacitors
title_full_unstemmed	In Situ Binder-Free and Hydrothermal Growth of Nanostructured NiCo<sub>2</sub>S<sub>4</sub>/Ni Electrodes for Solid-State Hybrid Supercapacitors
title_sort	in situ binder-free and hydrothermal growth of nanostructured nico<sub>2</sub>s<sub>4</sub>/ni electrodes for solid-state hybrid supercapacitors
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/96b5e81ebcf044eebc1a5169625d9e76
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In Situ Binder-Free and Hydrothermal Growth of Nanostructured NiCo<sub>2</sub>S<sub>4</sub>/Ni Electrodes for Solid-State Hybrid Supercapacitors

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