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Facile preparation of 3D porous agar-based heteroatom-doped carbon aerogels for high-energy density supercapacitors

The fabrication of heteroatom-doped porous carbon materials with high electrical conductivity and large specific surface area via an environmentally friendly route is critical and challenging. Herein, nitrogen and oxygen co-doped agar porous carbon (APC) was developed for supercapacitors via a one-s...

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Autores principales: Xie, Kaijun, Xia, Kai, Ding, Xin, Fang, Long, Liu, Xin, Zhang, Xiaodong
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/PMC9302333/
https://www.ncbi.nlm.nih.gov/pubmed/35919134
http://dx.doi.org/10.1039/d2ra03685a
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author Xie, Kaijun
Xia, Kai
Ding, Xin
Fang, Long
Liu, Xin
Zhang, Xiaodong
author_facet Xie, Kaijun
Xia, Kai
Ding, Xin
Fang, Long
Liu, Xin
Zhang, Xiaodong
author_sort Xie, Kaijun
collection PubMed
description The fabrication of heteroatom-doped porous carbon materials with high electrical conductivity and large specific surface area via an environmentally friendly route is critical and challenging. Herein, nitrogen and oxygen co-doped agar porous carbon (APC) was developed for supercapacitors via a one-step carbonization method with agar as the raw material and ammonia as the activator and nitrogen source. APC outperformed pectin porous carbon, tamarind porous carbon, and the previously reported carbon-based supercapacitors with a high capacitance retention of 72% even from 0.5 A g(−1) to 20 A g(−1) and excellent cycling stability in 6 M KOH solution (retained after 10 000 cycles) with a rate of over 98.5%. Furthermore, the APC electrode-based symmetric device exhibited an impressive energy density of 20.4 W h kg(−1) and an ultra-high power density of 449 W kg(−1) in 1 M Na(2)SO(4) electrolyte together with excellent cycling stability (103.2% primary capacitance retentivity after 10 000 cycles). This study offers a novel method for the synthesis of nitrogen heteroatom-doped hierarchical porous carbon materials for performance-enhanced energy storage devices.
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spelling pubmed-93023332022-08-01 Facile preparation of 3D porous agar-based heteroatom-doped carbon aerogels for high-energy density supercapacitors Xie, Kaijun Xia, Kai Ding, Xin Fang, Long Liu, Xin Zhang, Xiaodong RSC Adv Chemistry The fabrication of heteroatom-doped porous carbon materials with high electrical conductivity and large specific surface area via an environmentally friendly route is critical and challenging. Herein, nitrogen and oxygen co-doped agar porous carbon (APC) was developed for supercapacitors via a one-step carbonization method with agar as the raw material and ammonia as the activator and nitrogen source. APC outperformed pectin porous carbon, tamarind porous carbon, and the previously reported carbon-based supercapacitors with a high capacitance retention of 72% even from 0.5 A g(−1) to 20 A g(−1) and excellent cycling stability in 6 M KOH solution (retained after 10 000 cycles) with a rate of over 98.5%. Furthermore, the APC electrode-based symmetric device exhibited an impressive energy density of 20.4 W h kg(−1) and an ultra-high power density of 449 W kg(−1) in 1 M Na(2)SO(4) electrolyte together with excellent cycling stability (103.2% primary capacitance retentivity after 10 000 cycles). This study offers a novel method for the synthesis of nitrogen heteroatom-doped hierarchical porous carbon materials for performance-enhanced energy storage devices. The Royal Society of Chemistry 2022-07-21 /pmc/articles/PMC9302333/ /pubmed/35919134 http://dx.doi.org/10.1039/d2ra03685a Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/
spellingShingle Chemistry
Xie, Kaijun
Xia, Kai
Ding, Xin
Fang, Long
Liu, Xin
Zhang, Xiaodong
Facile preparation of 3D porous agar-based heteroatom-doped carbon aerogels for high-energy density supercapacitors
title Facile preparation of 3D porous agar-based heteroatom-doped carbon aerogels for high-energy density supercapacitors
title_full Facile preparation of 3D porous agar-based heteroatom-doped carbon aerogels for high-energy density supercapacitors
title_fullStr Facile preparation of 3D porous agar-based heteroatom-doped carbon aerogels for high-energy density supercapacitors
title_full_unstemmed Facile preparation of 3D porous agar-based heteroatom-doped carbon aerogels for high-energy density supercapacitors
title_short Facile preparation of 3D porous agar-based heteroatom-doped carbon aerogels for high-energy density supercapacitors
title_sort facile preparation of 3d porous agar-based heteroatom-doped carbon aerogels for high-energy density supercapacitors
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9302333/
https://www.ncbi.nlm.nih.gov/pubmed/35919134
http://dx.doi.org/10.1039/d2ra03685a
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