Por favor, use este identificador para citar o enlazar a este item:
http://hdl.handle.net/10261/173657
COMPARTIR / EXPORTAR:
SHARE CORE BASE | |
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE | |
Título: | Effect of oxygen and structural properties on the electrical conductivity of powders of nanostructured carbon materials |
Autor: | Pérez Rodríguez, Sara CSIC ORCID; Torres Gamarra, Daniel CSIC ORCID; Lázaro Elorri, María Jesús CSIC ORCID | Palabras clave: | Nanostructured carbon powders Electrical conductivity under compression Intrinsic electrical conductivity Graphitization Oxygen functionalization |
Fecha de publicación: | 19-sep-2018 | Editor: | Elsevier | Citación: | Powder Technology 340: 380-388 (2018) | Resumen: | This work reports a study of the electrical conductivity under compression of nanostructured carbon powders with different physicochemical properties (texture, chemical-surface and morphology): a commercial carbon black (Vulcan XC-72R) and synthesized ordered mesoporous carbon (OMC), carbon nanocoils (CNC) and carbon nanofibers (CNF). The electrical conductivity was determined from the sample resistance under compaction (from 0.5 to 140 MPa) using the four-probe technique. A comparison of intrinsic and grain electrical conductivities (calculated according to the percolation theory and the general effective media approximation) was performed. Additionally, samples were subjected to chemical oxidation or graphitization treatments to evaluate the effect of oxygen content and structural properties on the electrical conductivity. In spite of the physicochemical differences of carbon materials, an exponential decrease of the electrical conductivity with the oxygen amount was stated. Finally, thermal treatment of OMC at 1500 °C led to a surprising increase in its conductivity due to the graphitization of the amorphous carbon structure of the original material and the oxygen removal. | Descripción: | 6 Figuras. 4 Tablas.-- Datos suplementarios sobre el artículo disponibles en la versión en línea del editor.-- © 2018. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/ | Versión del editor: | http://dx.doi.org/10.1016/j.powtec.2018.09.038 | URI: | http://hdl.handle.net/10261/173657 | DOI: | 10.1016/j.powtec.2018.09.038 | ISSN: | 0032-5910 |
Aparece en las colecciones: | (ICB) Artículos |
Ficheros en este ítem:
Fichero | Descripción | Tamaño | Formato | |
---|---|---|---|---|
Perez_2018-PT.pdf | Artículo | 1,85 MB | Adobe PDF | Visualizar/Abrir |
CORE Recommender
SCOPUSTM
Citations
27
checked on 13-abr-2024
WEB OF SCIENCETM
Citations
26
checked on 25-feb-2024
Page view(s)
276
checked on 19-abr-2024
Download(s)
384
checked on 19-abr-2024
Google ScholarTM
Check
Altmetric
Altmetric
NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.