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Combined effect of nitrogen-doped functional groups and porosity of porous carbons on electrochemical performance of supercapacitors

In this work, nitrogen-doped porous carbons obtained from chitosan, gelatine, and green algae were investigated in their role as supercapacitor electrodes. The effects of three factors on electrochemical performance have been studied—of the specific surface area, functional groups, and a porous stru...

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Autores principales: Ilnicka, Anna, Skorupska, Malgorzata, Szkoda, Mariusz, Zarach, Zuzanna, Kamedulski, Piotr, Zielinski, Wojciech, Lukaszewicz, Jerzy P.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8443607/
https://www.ncbi.nlm.nih.gov/pubmed/34526635
http://dx.doi.org/10.1038/s41598-021-97932-x
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author Ilnicka, Anna
Skorupska, Malgorzata
Szkoda, Mariusz
Zarach, Zuzanna
Kamedulski, Piotr
Zielinski, Wojciech
Lukaszewicz, Jerzy P.
author_facet Ilnicka, Anna
Skorupska, Malgorzata
Szkoda, Mariusz
Zarach, Zuzanna
Kamedulski, Piotr
Zielinski, Wojciech
Lukaszewicz, Jerzy P.
author_sort Ilnicka, Anna
collection PubMed
description In this work, nitrogen-doped porous carbons obtained from chitosan, gelatine, and green algae were investigated in their role as supercapacitor electrodes. The effects of three factors on electrochemical performance have been studied—of the specific surface area, functional groups, and a porous structure. Varying nitrogen contents (from 5.46 to 10.08 wt.%) and specific surface areas (from 532 to 1095 m(2) g(−1)) were obtained by modifying the carbon precursor and the carbonization temperature. Doping nitrogen into carbon at a level of 5.74–7.09 wt.% appears to be the optimum for obtaining high electrochemical capacitance. The obtained carbons exhibited high capacitance (231 F g(−1) at 0.1 A g(−1)) and cycle durability in a 0.2 mol L(−1) K(2)SO(4) electrolyte. Capacitance retention was equal to 91% at 5 A g(−1) after 10,000 chronopotentiometry cycles. An analysis of electrochemical behaviour reveals the influence that nitrogen functional groups have on pseudocapacitance. While quaternary-N and pyrrolic-N nitrogen groups have an enhancing effect, due to the presence of a positive charge and thus improved electron transfer at high current loads, the most important functional group affecting energy storage performance is graphite-N/quaternary-N. The study points out that the search for the most favourable organic precursors is as important as the process of converting precursors to carbon-based electrode materials.
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spelling pubmed-84436072021-09-20 Combined effect of nitrogen-doped functional groups and porosity of porous carbons on electrochemical performance of supercapacitors Ilnicka, Anna Skorupska, Malgorzata Szkoda, Mariusz Zarach, Zuzanna Kamedulski, Piotr Zielinski, Wojciech Lukaszewicz, Jerzy P. Sci Rep Article In this work, nitrogen-doped porous carbons obtained from chitosan, gelatine, and green algae were investigated in their role as supercapacitor electrodes. The effects of three factors on electrochemical performance have been studied—of the specific surface area, functional groups, and a porous structure. Varying nitrogen contents (from 5.46 to 10.08 wt.%) and specific surface areas (from 532 to 1095 m(2) g(−1)) were obtained by modifying the carbon precursor and the carbonization temperature. Doping nitrogen into carbon at a level of 5.74–7.09 wt.% appears to be the optimum for obtaining high electrochemical capacitance. The obtained carbons exhibited high capacitance (231 F g(−1) at 0.1 A g(−1)) and cycle durability in a 0.2 mol L(−1) K(2)SO(4) electrolyte. Capacitance retention was equal to 91% at 5 A g(−1) after 10,000 chronopotentiometry cycles. An analysis of electrochemical behaviour reveals the influence that nitrogen functional groups have on pseudocapacitance. While quaternary-N and pyrrolic-N nitrogen groups have an enhancing effect, due to the presence of a positive charge and thus improved electron transfer at high current loads, the most important functional group affecting energy storage performance is graphite-N/quaternary-N. The study points out that the search for the most favourable organic precursors is as important as the process of converting precursors to carbon-based electrode materials. Nature Publishing Group UK 2021-09-15 /pmc/articles/PMC8443607/ /pubmed/34526635 http://dx.doi.org/10.1038/s41598-021-97932-x Text en © The Author(s) 2021 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Article
Ilnicka, Anna
Skorupska, Malgorzata
Szkoda, Mariusz
Zarach, Zuzanna
Kamedulski, Piotr
Zielinski, Wojciech
Lukaszewicz, Jerzy P.
Combined effect of nitrogen-doped functional groups and porosity of porous carbons on electrochemical performance of supercapacitors
title Combined effect of nitrogen-doped functional groups and porosity of porous carbons on electrochemical performance of supercapacitors
title_full Combined effect of nitrogen-doped functional groups and porosity of porous carbons on electrochemical performance of supercapacitors
title_fullStr Combined effect of nitrogen-doped functional groups and porosity of porous carbons on electrochemical performance of supercapacitors
title_full_unstemmed Combined effect of nitrogen-doped functional groups and porosity of porous carbons on electrochemical performance of supercapacitors
title_short Combined effect of nitrogen-doped functional groups and porosity of porous carbons on electrochemical performance of supercapacitors
title_sort combined effect of nitrogen-doped functional groups and porosity of porous carbons on electrochemical performance of supercapacitors
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8443607/
https://www.ncbi.nlm.nih.gov/pubmed/34526635
http://dx.doi.org/10.1038/s41598-021-97932-x
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