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

Abstract 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 po...

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Autores principales:	Anna Ilnicka, Malgorzata Skorupska, Mariusz Szkoda, Zuzanna Zarach, Piotr Kamedulski, Wojciech Zielinski, Jerzy P. Lukaszewicz
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/1f2adaf1f0344892b4ba5fc668fcd542
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spelling	oai:doaj.org-article:1f2adaf1f0344892b4ba5fc668fcd5422021-12-02T15:15:58ZCombined effect of nitrogen-doped functional groups and porosity of porous carbons on electrochemical performance of supercapacitors10.1038/s41598-021-97932-x2045-2322https://doaj.org/article/1f2adaf1f0344892b4ba5fc668fcd5422021-09-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-97932-xhttps://doaj.org/toc/2045-2322Abstract 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 m2 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 K2SO4 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.Anna IlnickaMalgorzata SkorupskaMariusz SzkodaZuzanna ZarachPiotr KamedulskiWojciech ZielinskiJerzy P. LukaszewiczNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-11 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Anna Ilnicka Malgorzata Skorupska Mariusz Szkoda Zuzanna Zarach Piotr Kamedulski Wojciech Zielinski Jerzy P. Lukaszewicz Combined effect of nitrogen-doped functional groups and porosity of porous carbons on electrochemical performance of supercapacitors
description	Abstract 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 m2 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 K2SO4 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.
format	article
author	Anna Ilnicka Malgorzata Skorupska Mariusz Szkoda Zuzanna Zarach Piotr Kamedulski Wojciech Zielinski Jerzy P. Lukaszewicz
author_facet	Anna Ilnicka Malgorzata Skorupska Mariusz Szkoda Zuzanna Zarach Piotr Kamedulski Wojciech Zielinski Jerzy P. Lukaszewicz
author_sort	Anna Ilnicka
title	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_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_sort	combined effect of nitrogen-doped functional groups and porosity of porous carbons on electrochemical performance of supercapacitors
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/1f2adaf1f0344892b4ba5fc668fcd542
work_keys_str_mv	AT annailnicka combinedeffectofnitrogendopedfunctionalgroupsandporosityofporouscarbonsonelectrochemicalperformanceofsupercapacitors AT malgorzataskorupska combinedeffectofnitrogendopedfunctionalgroupsandporosityofporouscarbonsonelectrochemicalperformanceofsupercapacitors AT mariuszszkoda combinedeffectofnitrogendopedfunctionalgroupsandporosityofporouscarbonsonelectrochemicalperformanceofsupercapacitors AT zuzannazarach combinedeffectofnitrogendopedfunctionalgroupsandporosityofporouscarbonsonelectrochemicalperformanceofsupercapacitors AT piotrkamedulski combinedeffectofnitrogendopedfunctionalgroupsandporosityofporouscarbonsonelectrochemicalperformanceofsupercapacitors AT wojciechzielinski combinedeffectofnitrogendopedfunctionalgroupsandporosityofporouscarbonsonelectrochemicalperformanceofsupercapacitors AT jerzyplukaszewicz combinedeffectofnitrogendopedfunctionalgroupsandporosityofporouscarbonsonelectrochemicalperformanceofsupercapacitors
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Combined effect of nitrogen-doped functional groups and porosity of porous carbons on electrochemical performance of supercapacitors

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