Bibliographic Details
| Title: |
One-pot synthesis of hierarchical porous carbons with extended ultramicropores: New prospective materials for supercapacitors |
| Authors: |
Analia Natali Arias, Jhonny Villarroel-Rocha, Karim Sapag, María Fernanda Mori, Gabriel Angel Planes, Victoria Flexer, Alvaro Yamil Tesio |
| Source: |
Carbon Trends, Vol 5, Iss , Pp 100110- (2021) |
| Publisher Information: |
Elsevier, 2021. |
| Publication Year: |
2021 |
| Collection: |
LCC:Chemistry |
| Subject Terms: |
Porous carbons, N-doping, Hierarchical porosity, Melamine, Symmetrical supercapacitor, Chemistry, QD1-999 |
| More Details: |
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. |
| Document Type: |
article |
| File Description: |
electronic resource |
| Language: |
English |
| ISSN: |
2667-0569 |
| Relation: |
http://www.sciencedirect.com/science/article/pii/S2667056921000870; https://doaj.org/toc/2667-0569 |
| DOI: |
10.1016/j.cartre.2021.100110 |
| Access URL: |
https://doaj.org/article/a7be8c035e54452e9eddc4460443083c |
| Accession Number: |
edsdoj.7be8c035e54452e9eddc4460443083c |
| Database: |
Directory of Open Access Journals |
