Nitrogen Doped Superactivated Carbons Prepared at Mild Conditions as Electrodes for Supercapacitors in Organic Electrolyte
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Título: | Nitrogen Doped Superactivated Carbons Prepared at Mild Conditions as Electrodes for Supercapacitors in Organic Electrolyte |
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Autor/es: | Mostazo-López, María José | Ruiz-Rosas, Ramiro | Tagaya, Tomomi | Hatakeyama, Yoshikiyo | Shiraishi, Soshi | Morallon, Emilia | Cazorla-Amorós, Diego |
Grupo/s de investigación o GITE: | Materiales Carbonosos y Medio Ambiente | Electrocatálisis y Electroquímica de Polímeros |
Centro, Departamento o Servicio: | Universidad de Alicante. Departamento de Química Inorgánica | Universidad de Alicante. Departamento de Química Física | Universidad de Alicante. Instituto Universitario de Materiales |
Palabras clave: | Electric double layer capacitor | Porous carbon | Nitrogen doping | Surface chemistry |
Área/s de conocimiento: | Química Inorgánica | Química Física |
Fecha de publicación: | 20-sep-2020 |
Editor: | MDPI |
Cita bibliográfica: | Mostazo-López MJ, Ruiz-Rosas R, Tagaya T, Hatakeyama Y, Shiraishi S, Morallón E, Cazorla-Amorós D. Nitrogen Doped Superactivated Carbons Prepared at Mild Conditions as Electrodes for Supercapacitors in Organic Electrolyte. C. 2020; 6(3):56. https://doi.org/10.3390/c6030056 |
Resumen: | Nitrogen functionalization of a highly microporous activated carbon (SBET > 3000 m2/g), to be used as electrode of electric double layer capacitor (EDLC), was carried out by different methods based on organic chemistry protocols at low temperature and selective thermal post-treatments under inert atmosphere. The combination of both methods allowed the production of carbon materials with very similar surface area (2400–3000 m2/g) and different surface chemistry. The nitrogen functionalization by chemical methods produce the attachment of 4 at. % N (XPS) by consumption of oxygen functional groups. The thermal treatments rearrange the surface chemistry by decreasing and converting both nitrogen and oxygen moieties. The effect of surface chemistry on the performance of these materials as electrodes for symmetric supercapacitors was analyzed in organic electrolyte (1M TEMABF4/propylene carbonate). The devices showed high gravimetric capacitance (37–40 F/g) and gravimetric energy density (31–37 Wh/kg). The electrochemical stability of the EDLC was evaluated by a floating test under severe conditions of voltage and temperature. The results evidence an improvement of the durability of nitrogen-doped activated carbons modified by chemical treatments due to the decrease of detrimental oxygen functionalities and the generation of nitrogen groups with higher electrochemical stability. |
Patrocinador/es: | This research was funded by MINECO, FEDER (CTQ2015-66080-R (MINECO/FEDER), RTI2018-095291-B-I00, ENE2017-90932-REDT, PID2019-105923RB-I00), JSPS KAKENHI (17H03123), and Gunma University Element Functional Science Project. MJML was funded by VALi+d grant (ACIF/2015/374) and mobility grant (BEFPI/2016/006). |
URI: | http://hdl.handle.net/10045/110011 |
ISSN: | 2311-5629 |
DOI: | 10.3390/c6030056 |
Idioma: | eng |
Tipo: | info:eu-repo/semantics/article |
Derechos: | © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). |
Revisión científica: | si |
Versión del editor: | https://doi.org/10.3390/c6030056 |
Aparece en las colecciones: | INV - MCMA - Artículos de Revistas INV - GEPE - Artículos de Revistas |
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