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Nitrogen doped graphene with diamond-like bonds achieves unprecedented energy density at high power in a symmetric sustainable supercapacitor

Supercapacitors have attracted great interest because of their fast, reversible operation and sustainability. However, their energy densities remain lower than those of batteries. In the last decade, supercapacitors with an energy content of ∼110 W h L(−1) at a power of ∼1 kW L(−1) were developed by...

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Autores principales: Šedajová, Veronika, Bakandritsos, Aristides, Błoński, Piotr, Medveď, Miroslav, Langer, Rostislav, Zaoralová, Dagmar, Ugolotti, Juri, Dzíbelová, Jana, Jakubec, Petr, Kupka, Vojtěch, Otyepka, Michal
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society of Chemistry 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8848332/
https://www.ncbi.nlm.nih.gov/pubmed/35308297
http://dx.doi.org/10.1039/d1ee02234b
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author Šedajová, Veronika
Bakandritsos, Aristides
Błoński, Piotr
Medveď, Miroslav
Langer, Rostislav
Zaoralová, Dagmar
Ugolotti, Juri
Dzíbelová, Jana
Jakubec, Petr
Kupka, Vojtěch
Otyepka, Michal
author_facet Šedajová, Veronika
Bakandritsos, Aristides
Błoński, Piotr
Medveď, Miroslav
Langer, Rostislav
Zaoralová, Dagmar
Ugolotti, Juri
Dzíbelová, Jana
Jakubec, Petr
Kupka, Vojtěch
Otyepka, Michal
author_sort Šedajová, Veronika
collection PubMed
description Supercapacitors have attracted great interest because of their fast, reversible operation and sustainability. However, their energy densities remain lower than those of batteries. In the last decade, supercapacitors with an energy content of ∼110 W h L(−1) at a power of ∼1 kW L(−1) were developed by leveraging the open framework structure of graphene-related architectures. Here, we report that the reaction of fluorographene with azide anions enables the preparation of a material combining graphene-type sp(2) layers with tetrahedral carbon–carbon bonds and nitrogen (pyridinic and pyrrolic) superdoping (16%). Theoretical investigations showed that the C–C bonds develop between carbon-centered radicals, which emerge in the vicinity of the nitrogen dopants. This material, with diamond-like bonds and an ultra-high mass density of 2.8 g cm(−3), is an excellent host for the ions, delivering unprecedented energy densities of 200 W h L(−1) at a power of 2.6 kW L(−1) and 143 W h L(−1) at 52 kW L(−1). These findings open a route to materials whose properties may enable a transformative improvement in the performance of supercapacitor components.
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spelling pubmed-88483322022-03-17 Nitrogen doped graphene with diamond-like bonds achieves unprecedented energy density at high power in a symmetric sustainable supercapacitor Šedajová, Veronika Bakandritsos, Aristides Błoński, Piotr Medveď, Miroslav Langer, Rostislav Zaoralová, Dagmar Ugolotti, Juri Dzíbelová, Jana Jakubec, Petr Kupka, Vojtěch Otyepka, Michal Energy Environ Sci Chemistry Supercapacitors have attracted great interest because of their fast, reversible operation and sustainability. However, their energy densities remain lower than those of batteries. In the last decade, supercapacitors with an energy content of ∼110 W h L(−1) at a power of ∼1 kW L(−1) were developed by leveraging the open framework structure of graphene-related architectures. Here, we report that the reaction of fluorographene with azide anions enables the preparation of a material combining graphene-type sp(2) layers with tetrahedral carbon–carbon bonds and nitrogen (pyridinic and pyrrolic) superdoping (16%). Theoretical investigations showed that the C–C bonds develop between carbon-centered radicals, which emerge in the vicinity of the nitrogen dopants. This material, with diamond-like bonds and an ultra-high mass density of 2.8 g cm(−3), is an excellent host for the ions, delivering unprecedented energy densities of 200 W h L(−1) at a power of 2.6 kW L(−1) and 143 W h L(−1) at 52 kW L(−1). These findings open a route to materials whose properties may enable a transformative improvement in the performance of supercapacitor components. The Royal Society of Chemistry 2022-01-07 /pmc/articles/PMC8848332/ /pubmed/35308297 http://dx.doi.org/10.1039/d1ee02234b Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by/3.0/
spellingShingle Chemistry
Šedajová, Veronika
Bakandritsos, Aristides
Błoński, Piotr
Medveď, Miroslav
Langer, Rostislav
Zaoralová, Dagmar
Ugolotti, Juri
Dzíbelová, Jana
Jakubec, Petr
Kupka, Vojtěch
Otyepka, Michal
Nitrogen doped graphene with diamond-like bonds achieves unprecedented energy density at high power in a symmetric sustainable supercapacitor
title Nitrogen doped graphene with diamond-like bonds achieves unprecedented energy density at high power in a symmetric sustainable supercapacitor
title_full Nitrogen doped graphene with diamond-like bonds achieves unprecedented energy density at high power in a symmetric sustainable supercapacitor
title_fullStr Nitrogen doped graphene with diamond-like bonds achieves unprecedented energy density at high power in a symmetric sustainable supercapacitor
title_full_unstemmed Nitrogen doped graphene with diamond-like bonds achieves unprecedented energy density at high power in a symmetric sustainable supercapacitor
title_short Nitrogen doped graphene with diamond-like bonds achieves unprecedented energy density at high power in a symmetric sustainable supercapacitor
title_sort nitrogen doped graphene with diamond-like bonds achieves unprecedented energy density at high power in a symmetric sustainable supercapacitor
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8848332/
https://www.ncbi.nlm.nih.gov/pubmed/35308297
http://dx.doi.org/10.1039/d1ee02234b
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