One-pot synthesis of hierarchical porous carbons with extended ultramicropores: New prospective materials for supercapacitors
A series of carbon electrodes was synthesized via a modification of the polymerization-condensation reaction, where a 4:1 mass excess of melamine was added in basic media to the resorcinol/formaldehyde classical mixture. Melamine, together with variations of the pyrolysis temperature play a key role...
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doaj-a7be8c035e54452e9eddc4460443083c2021-09-25T05:12:09ZengElsevierCarbon Trends2667-05692021-10-015100110One-pot synthesis of hierarchical porous carbons with extended ultramicropores: New prospective materials for supercapacitorsAnalia Natali Arias0Jhonny Villarroel-Rocha1Karim Sapag2María Fernanda Mori3Gabriel Angel Planes4Victoria Flexer5Alvaro Yamil Tesio6Centro de Desarrollo Tecnológico General Savio, CIDMEJu (CONICET-Universidad Nacional de Jujuy), Palpalá, Jujuy 4612, ArgentinaLaboratorio de Sólidos Porosos (LabSoP), Instituto de Física Aplicada-CONICET, Dpto. de Física, Universidad Nacional de San Luis, Ejército de los Andes 950, San Luis 5700, ArgentinaLaboratorio de Sólidos Porosos (LabSoP), Instituto de Física Aplicada-CONICET, Dpto. de Física, Universidad Nacional de San Luis, Ejército de los Andes 950, San Luis 5700, ArgentinaInstituto de Investigaciones en Catálisis y Petroquímica - CONICET - Facultad de Ingeniería Química, Universidad Nacional del Litoral, Santiago del Estero 2829, Santa Fe S3000AOM, ArgentinaFacultad de Ciencias Exactas Fisicoquímicas y Naturales, Universidad Nacional de Río Cuarto, Ruta Nac. 36, Km 601, Río Cuarto, Córdoba, Argentina; Instituto de Investigaciones en Tecnologías Energéticas y Materiales Avanzados (IITEMA), Universidad Nacional de Río Cuarto, Ruta Nac. 36, Km 601, Río Cuarto, Córdoba, ArgentinaCentro de Desarrollo Tecnológico General Savio, CIDMEJu (CONICET-Universidad Nacional de Jujuy), Palpalá, Jujuy 4612, Argentina; Corresponding authors.Centro de Desarrollo Tecnológico General Savio, CIDMEJu (CONICET-Universidad Nacional de Jujuy), Palpalá, Jujuy 4612, Argentina; Corresponding authors.A series of carbon electrodes was synthesized via a modification of the polymerization-condensation reaction, where a 4:1 mass excess of melamine was added in basic media to the resorcinol/formaldehyde classical mixture. Melamine, together with variations of the pyrolysis temperature play a key role to define the chemical and textural properties of these carbons. A high nitrogen content, ranging from 23.2 to 11.3 % was determined. A low degree of crystallinity and disordered internal structure were assessed, while a hierarchical porous structure was stablished for all samples, including an important ultramicroporosity, with pore sizes below 0.7 nm. All electrodes showed a predominant double layer capacitive behaviour in aqueous H2SO4, while a small pseudocapacitive contribution was also evidenced for the three carbons pyrolysed at higher temperatures. These three electrodes show the highest specific capacitance (maximum of 153.6 F g−1), and outstanding cycling over 10,000 cycles. A comprehensive analysis correlating morphological and surface properties and the electrochemical behaviour was carried out. The best performing carbon was selected to construct a symmetrical device for which a specific capacitance of 103 F g−1 was determined, reaching energy and power density values of 1.4 Wh Kg−1 and 111.7 W Kg−1, respectively.http://www.sciencedirect.com/science/article/pii/S2667056921000870Porous carbonsN-dopingHierarchical porosityMelamineSymmetrical supercapacitor |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Analia Natali Arias Jhonny Villarroel-Rocha Karim Sapag María Fernanda Mori Gabriel Angel Planes Victoria Flexer Alvaro Yamil Tesio |
spellingShingle |
Analia Natali Arias Jhonny Villarroel-Rocha Karim Sapag María Fernanda Mori Gabriel Angel Planes Victoria Flexer Alvaro Yamil Tesio One-pot synthesis of hierarchical porous carbons with extended ultramicropores: New prospective materials for supercapacitors Carbon Trends Porous carbons N-doping Hierarchical porosity Melamine Symmetrical supercapacitor |
author_facet |
Analia Natali Arias Jhonny Villarroel-Rocha Karim Sapag María Fernanda Mori Gabriel Angel Planes Victoria Flexer Alvaro Yamil Tesio |
author_sort |
Analia Natali Arias |
title |
One-pot synthesis of hierarchical porous carbons with extended ultramicropores: New prospective materials for supercapacitors |
title_short |
One-pot synthesis of hierarchical porous carbons with extended ultramicropores: New prospective materials for supercapacitors |
title_full |
One-pot synthesis of hierarchical porous carbons with extended ultramicropores: New prospective materials for supercapacitors |
title_fullStr |
One-pot synthesis of hierarchical porous carbons with extended ultramicropores: New prospective materials for supercapacitors |
title_full_unstemmed |
One-pot synthesis of hierarchical porous carbons with extended ultramicropores: New prospective materials for supercapacitors |
title_sort |
one-pot synthesis of hierarchical porous carbons with extended ultramicropores: new prospective materials for supercapacitors |
publisher |
Elsevier |
series |
Carbon Trends |
issn |
2667-0569 |
publishDate |
2021-10-01 |
description |
A series of carbon electrodes was synthesized via a modification of the polymerization-condensation reaction, where a 4:1 mass excess of melamine was added in basic media to the resorcinol/formaldehyde classical mixture. Melamine, together with variations of the pyrolysis temperature play a key role to define the chemical and textural properties of these carbons. A high nitrogen content, ranging from 23.2 to 11.3 % was determined. A low degree of crystallinity and disordered internal structure were assessed, while a hierarchical porous structure was stablished for all samples, including an important ultramicroporosity, with pore sizes below 0.7 nm. All electrodes showed a predominant double layer capacitive behaviour in aqueous H2SO4, while a small pseudocapacitive contribution was also evidenced for the three carbons pyrolysed at higher temperatures. These three electrodes show the highest specific capacitance (maximum of 153.6 F g−1), and outstanding cycling over 10,000 cycles. A comprehensive analysis correlating morphological and surface properties and the electrochemical behaviour was carried out. The best performing carbon was selected to construct a symmetrical device for which a specific capacitance of 103 F g−1 was determined, reaching energy and power density values of 1.4 Wh Kg−1 and 111.7 W Kg−1, respectively. |
topic |
Porous carbons N-doping Hierarchical porosity Melamine Symmetrical supercapacitor |
url |
http://www.sciencedirect.com/science/article/pii/S2667056921000870 |
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