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Construction of thickness-controllable bimetallic sulfides/reduced graphene oxide as a binder-free positive electrode for hybrid supercapacitors

Devices for electrochemical energy storage with exceptional capacitance and rate performance, outstanding energy density, simple fabrication, long-term stability, and remarkable reversibility have always been in high demand. Herein, a high-performance binder-free electrode (3D NiCuS/rGO) was fabrica...

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Autores principales: Ghanem, Ramage M., Kospa, Doaa A., Ahmed, Awad I., Ibrahim, Amr Awad, Gebreil, Ahmed
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society of Chemistry 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10551804/
https://www.ncbi.nlm.nih.gov/pubmed/37809023
http://dx.doi.org/10.1039/d3ra05326a
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author Ghanem, Ramage M.
Kospa, Doaa A.
Ahmed, Awad I.
Ibrahim, Amr Awad
Gebreil, Ahmed
author_facet Ghanem, Ramage M.
Kospa, Doaa A.
Ahmed, Awad I.
Ibrahim, Amr Awad
Gebreil, Ahmed
author_sort Ghanem, Ramage M.
collection PubMed
description Devices for electrochemical energy storage with exceptional capacitance and rate performance, outstanding energy density, simple fabrication, long-term stability, and remarkable reversibility have always been in high demand. Herein, a high-performance binder-free electrode (3D NiCuS/rGO) was fabricated as a supercapacitor by a simple electrodeposition process on a Ni foam (NF) surface. The thickness of the deposited materials on the NF surface was adjusted by applying a low cycle number of cyclic voltammetry (5 cycles) which produced a thin layer and thus enabled the easier penetration of electrolytes to promote electron and charge transfer. The NiCuS was anchored by graphene layers producing nicely integrated materials leading to a higher electroconductivity and a larger surface area electrode. The as-fabricated electrode displayed a high specific capacitance (2211.029 F g(−1) at 5 mV s(−1)). The NiCuS/rGO/NF//active carbon device can achieve a stable voltage window of 1.5 V with a highly specific capacitance of 84.3 F g(−1) at a current density of 1 A g(−1). At a power density of 749 W kg(−1), a satisfactory energy density of 26.3 W h kg(−1) was achieved, with outstanding coulombic efficiency of 100% and an admirable life span of 96.2% after 10 000 GCD cycles suggesting the significant potential of the as-prepared materials for practical supercapacitors.
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spelling pubmed-105518042023-10-06 Construction of thickness-controllable bimetallic sulfides/reduced graphene oxide as a binder-free positive electrode for hybrid supercapacitors Ghanem, Ramage M. Kospa, Doaa A. Ahmed, Awad I. Ibrahim, Amr Awad Gebreil, Ahmed RSC Adv Chemistry Devices for electrochemical energy storage with exceptional capacitance and rate performance, outstanding energy density, simple fabrication, long-term stability, and remarkable reversibility have always been in high demand. Herein, a high-performance binder-free electrode (3D NiCuS/rGO) was fabricated as a supercapacitor by a simple electrodeposition process on a Ni foam (NF) surface. The thickness of the deposited materials on the NF surface was adjusted by applying a low cycle number of cyclic voltammetry (5 cycles) which produced a thin layer and thus enabled the easier penetration of electrolytes to promote electron and charge transfer. The NiCuS was anchored by graphene layers producing nicely integrated materials leading to a higher electroconductivity and a larger surface area electrode. The as-fabricated electrode displayed a high specific capacitance (2211.029 F g(−1) at 5 mV s(−1)). The NiCuS/rGO/NF//active carbon device can achieve a stable voltage window of 1.5 V with a highly specific capacitance of 84.3 F g(−1) at a current density of 1 A g(−1). At a power density of 749 W kg(−1), a satisfactory energy density of 26.3 W h kg(−1) was achieved, with outstanding coulombic efficiency of 100% and an admirable life span of 96.2% after 10 000 GCD cycles suggesting the significant potential of the as-prepared materials for practical supercapacitors. The Royal Society of Chemistry 2023-10-05 /pmc/articles/PMC10551804/ /pubmed/37809023 http://dx.doi.org/10.1039/d3ra05326a Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by/3.0/
spellingShingle Chemistry
Ghanem, Ramage M.
Kospa, Doaa A.
Ahmed, Awad I.
Ibrahim, Amr Awad
Gebreil, Ahmed
Construction of thickness-controllable bimetallic sulfides/reduced graphene oxide as a binder-free positive electrode for hybrid supercapacitors
title Construction of thickness-controllable bimetallic sulfides/reduced graphene oxide as a binder-free positive electrode for hybrid supercapacitors
title_full Construction of thickness-controllable bimetallic sulfides/reduced graphene oxide as a binder-free positive electrode for hybrid supercapacitors
title_fullStr Construction of thickness-controllable bimetallic sulfides/reduced graphene oxide as a binder-free positive electrode for hybrid supercapacitors
title_full_unstemmed Construction of thickness-controllable bimetallic sulfides/reduced graphene oxide as a binder-free positive electrode for hybrid supercapacitors
title_short Construction of thickness-controllable bimetallic sulfides/reduced graphene oxide as a binder-free positive electrode for hybrid supercapacitors
title_sort construction of thickness-controllable bimetallic sulfides/reduced graphene oxide as a binder-free positive electrode for hybrid supercapacitors
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10551804/
https://www.ncbi.nlm.nih.gov/pubmed/37809023
http://dx.doi.org/10.1039/d3ra05326a
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