Título

Synthesis of hollow carbon spheres by chemical activation of carbon nanoparticles for their use in electrochemical capacitor

Autor

Cesar Eduardo Sanchez Rodriguez

EDUARDO TOVAR MARTINEZ

MARISOL REYES REYES

Luis Felipe Cházaro Ruiz

ROMAN LOPEZ SANDOVAL

Nivel de Acceso

Acceso Abierto

Licencia

http://creativecommons.org/licenses/by-nc-nd/4.0

Identificador alterno

doi: https://doi.org/10.1016/j.cartre.2022.100220

Materias

Physicochemical properties - (AUTOR) Carbon nanoparticles - (AUTOR) Chemical activation - (AUTOR) Electrochemical capacitor - (AUTOR) BIOLOGÍA Y QUÍMICA - (CTI) QUÍMICA - (CTI) QUÍMICA - (CTI)

Resumen o descripción

"Naphthalene combustion has been used to synthesize grams per hour of solid carbon spheres (CS). The carbon soot was activated by acid treatment consisting in a mixture of HNO3 and H2SO4 (1/3 v/v) to produce hollow carbon spheres (HCS). The effect of two concentrations of CSs (5 and 10 mg mL−1) in the acid mixture, on the physicochemical properties of the activated HCSs was studied. The HSCs were subjected to a thermal treatment to increase their graphitization to enhance their electrical conductivity. High-resolution transmission electron microscopy confirmed the formation of HCSs due to the acid treatment whereas FTIR spectra showed that the chemical activation produced functional groups on the carbon spheres surface and the heat treatment effect to remove some of them as well. A specific surface area of 300 m2 g−1 and a large density of micropores for the acid-treated CSs as well as the heat-treated CSs were estimated by analysis of N2 adsorption-desorption isotherms. A specific capacitance 70 F g−1 was calculated by cyclic voltammetry of the acid and thermally treated HCSs at 5 mV s−1, for both CS concentrations, indicating the possibility of synthesizing these HCSs using a simple method in large quantities for their use in electrochemical capacitors."

Editor

Elsevier

Fecha de publicación

2022

Tipo de publicación

Artículo

Versión de la publicación

Versión publicada

Recurso de información

http://ipicyt.repositorioinstitucional.mx/jspui/handle/1010/2600

Formato

application/pdf

Sugerencia de citación

C.E. Sánchez-Rodriguez, E. Tovar-Martinez, M. Reyes-Reyes, Luis F. Chazaro-Ruiz, R. López-Sandoval, Synthesis of hollow carbon spheres by chemical activation of carbon nanoparticles for their use in electrochemical capacitor, Carbon Trends, Volume 9, 2022, 100220, https://doi.org/10.1016/j.cartre.2022.100220.

Repositorio Orígen

Repositorio IPICYT

Descargas

2