Residue of Corncob Gasification as Electrode of Supercapacitors: An Experimental and Theoretical Study
- PDF / 4,205,848 Bytes
- 18 Pages / 595.276 x 790.866 pts Page_size
- 87 Downloads / 196 Views
ORIGINAL PAPER
Residue of Corncob Gasification as Electrode of Supercapacitors: An Experimental and Theoretical Study Diana C. Martínez‑Casillas1,2 · Ivan Mascorro‑Gutiérrez1 · Maria L. Betancourt‑Mendiola3 · Gabriela Palestino3 · Enrique Quiroga‑González4 · Jojhar E. Pascoe‑Sussoni1 · Alfredo Guillén‑López1 · Jesús Muñiz1 · A. Karina Cuentas‑Gallegos1 Received: 6 March 2020 / Accepted: 19 September 2020 © Springer Nature B.V. 2020
Abstract In this work, it is proven that a biochar obtained from a commercial gasifier can be used as electrode material for supercapacitors (SC). This biochar was produced at 1000 °C from corn cob wastes (GAS), and was compared to an activated biochar obtained in a traditional lab pyrolysis process (LAB). Both biochars were characterized by different physicochemical techniques, observing their amorphous nature with well-developed microporosity dependent of their pretreatment and production methodology. Furthermore, a computational modeling based on Molecular Dynamics at the ReaxFF level was also performed to elucidate the geometry of the resulting microporous structure after simulated pyrolysis. X-ray structure and pore size distribution are in agreement with those results obtained via computational simulation. Both carbon materials were electrochemically evaluated in acidic electrolyte using 3 and 2 electrode systems, obtaining capacitances of 130 F g −1 (20 mV s −1 ), and excellent performance compared to commercial activated carbons, with only about 10% of capacitance loss after 5000 cycles. However, GAS performance in SC was higher than activated biochar due to its higher micropore volume. This study provides a novel useful application to use gasifier residues from agricultural biomass waste for energy storage devices. Graphic Abstract
Keywords Biomass gasification residue · Corncob waste · Biochar · Supercapacitor · Simulated pyrolysis · Molecular dynamics · Agricultural biomass waste * A. Karina Cuentas‑Gallegos [email protected]
2
CONACYT-TecNM/ITD, Felipe Pescador 1830 Ote, Nueva Vizcaya, 34080 Durango, Dgo, Mexico
Jesús Muñiz [email protected]
3
Facultad de Ciencias Químicas, Centro de Investigación en Ciencias de la Salud y Biomedicina, Universidad Autónoma de San Luis Potosí, 78210 San Luis Potosí, Mexico
4
Institute of Physics, Benemérita Universidad Autónoma de Puebla, San Claudio and 18 Sur, 72570 Puebla, Mexico
1
Instituto de Energías Renovables, Universidad Nacional Autónoma de México, Priv. Xochicalco s/n, Col. Centro, CP 62580 Temixco, Morelos, Mexico
13
Vol.:(0123456789)
Statement of Novelty Corncob is a non-edible residue and agricultural waste, coming from corn harvest. This work is intended to describe a novel added-value product of corn cob after pyrolysis in a commercial gasifier. The resulting porous carbon material was implemented in a supercapacitor device showing an excellent performance, superior to other carbons existent in the market. Characterization and electrochemical evaluation was performed to analyze the enhanced capaci
Data Loading...
