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Hydrous Ruthenium Oxide Nanoparticles Anchored to Graphene and Carbon Nanotube Hybrid Foam for Supercapacitors

In real life applications, supercapacitors (SCs) often can only be used as part of a hybrid system together with other high energy storage devices due to their relatively lower energy density in comparison to other types of energy storage devices such as batteries and fuel cells. Increasing the ener...

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Autores principales: Wang, Wei, Guo, Shirui, Lee, Ilkeun, Ahmed, Kazi, Zhong, Jiebin, Favors, Zachary, Zaera, Francisco, Ozkan, Mihrimah, Ozkan, Cengiz S.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2014
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3964521/
https://www.ncbi.nlm.nih.gov/pubmed/24663242
http://dx.doi.org/10.1038/srep04452
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author Wang, Wei
Guo, Shirui
Lee, Ilkeun
Ahmed, Kazi
Zhong, Jiebin
Favors, Zachary
Zaera, Francisco
Ozkan, Mihrimah
Ozkan, Cengiz S.
author_facet Wang, Wei
Guo, Shirui
Lee, Ilkeun
Ahmed, Kazi
Zhong, Jiebin
Favors, Zachary
Zaera, Francisco
Ozkan, Mihrimah
Ozkan, Cengiz S.
author_sort Wang, Wei
collection PubMed
description In real life applications, supercapacitors (SCs) often can only be used as part of a hybrid system together with other high energy storage devices due to their relatively lower energy density in comparison to other types of energy storage devices such as batteries and fuel cells. Increasing the energy density of SCs will have a huge impact on the development of future energy storage devices by broadening the area of application for SCs. Here, we report a simple and scalable way of preparing a three-dimensional (3D) sub-5 nm hydrous ruthenium oxide (RuO(2)) anchored graphene and CNT hybrid foam (RGM) architecture for high-performance supercapacitor electrodes. This RGM architecture demonstrates a novel graphene foam conformally covered with hybrid networks of RuO(2) nanoparticles and anchored CNTs. SCs based on RGM show superior gravimetric and per-area capacitive performance (specific capacitance: 502.78 F g(−1), areal capacitance: 1.11 F cm(−2)) which leads to an exceptionally high energy density of 39.28 Wh kg(−1) and power density of 128.01 kW kg(−1). The electrochemical stability, excellent capacitive performance, and the ease of preparation suggest this RGM system is promising for future energy storage applications.
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spelling pubmed-39645212014-03-26 Hydrous Ruthenium Oxide Nanoparticles Anchored to Graphene and Carbon Nanotube Hybrid Foam for Supercapacitors Wang, Wei Guo, Shirui Lee, Ilkeun Ahmed, Kazi Zhong, Jiebin Favors, Zachary Zaera, Francisco Ozkan, Mihrimah Ozkan, Cengiz S. Sci Rep Article In real life applications, supercapacitors (SCs) often can only be used as part of a hybrid system together with other high energy storage devices due to their relatively lower energy density in comparison to other types of energy storage devices such as batteries and fuel cells. Increasing the energy density of SCs will have a huge impact on the development of future energy storage devices by broadening the area of application for SCs. Here, we report a simple and scalable way of preparing a three-dimensional (3D) sub-5 nm hydrous ruthenium oxide (RuO(2)) anchored graphene and CNT hybrid foam (RGM) architecture for high-performance supercapacitor electrodes. This RGM architecture demonstrates a novel graphene foam conformally covered with hybrid networks of RuO(2) nanoparticles and anchored CNTs. SCs based on RGM show superior gravimetric and per-area capacitive performance (specific capacitance: 502.78 F g(−1), areal capacitance: 1.11 F cm(−2)) which leads to an exceptionally high energy density of 39.28 Wh kg(−1) and power density of 128.01 kW kg(−1). The electrochemical stability, excellent capacitive performance, and the ease of preparation suggest this RGM system is promising for future energy storage applications. Nature Publishing Group 2014-03-25 /pmc/articles/PMC3964521/ /pubmed/24663242 http://dx.doi.org/10.1038/srep04452 Text en Copyright © 2014, Macmillan Publishers Limited. All rights reserved http://creativecommons.org/licenses/by-nc-nd/3.0/ This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License. To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-nd/3.0/
spellingShingle Article
Wang, Wei
Guo, Shirui
Lee, Ilkeun
Ahmed, Kazi
Zhong, Jiebin
Favors, Zachary
Zaera, Francisco
Ozkan, Mihrimah
Ozkan, Cengiz S.
Hydrous Ruthenium Oxide Nanoparticles Anchored to Graphene and Carbon Nanotube Hybrid Foam for Supercapacitors
title Hydrous Ruthenium Oxide Nanoparticles Anchored to Graphene and Carbon Nanotube Hybrid Foam for Supercapacitors
title_full Hydrous Ruthenium Oxide Nanoparticles Anchored to Graphene and Carbon Nanotube Hybrid Foam for Supercapacitors
title_fullStr Hydrous Ruthenium Oxide Nanoparticles Anchored to Graphene and Carbon Nanotube Hybrid Foam for Supercapacitors
title_full_unstemmed Hydrous Ruthenium Oxide Nanoparticles Anchored to Graphene and Carbon Nanotube Hybrid Foam for Supercapacitors
title_short Hydrous Ruthenium Oxide Nanoparticles Anchored to Graphene and Carbon Nanotube Hybrid Foam for Supercapacitors
title_sort hydrous ruthenium oxide nanoparticles anchored to graphene and carbon nanotube hybrid foam for supercapacitors
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3964521/
https://www.ncbi.nlm.nih.gov/pubmed/24663242
http://dx.doi.org/10.1038/srep04452
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