Abstracts Book - IMRC 2018

• SA1-P053
CARBONS OBTAINED FROM MEXICAN AGROINDUSTRIAL
BIOMASS AS ELECTRODE MATERIALS FOR SUPERCAPACITOR
CELLS
Ana Karina Cuentas Gallegos 1 , Diana Cristina Martínez Casillas 1 , Diego Ramon Lobato Peralta 1 ,
Ivonne Alonso Lemus 2 , Víctor Hugo Ramos Sanchez 3 , Heidi Villafán Vidales 1 , Camilo Arancibia
Bulnes 1 , Alejandro Ayala Cortes 1
1 Universidad Nacional Autónoma de México, Instituto de Energías Renovables, Mexico. 2 Centro
de Investigación y de Estudios Avanzados del IPN - CINVESTAV, , Mexico. 3 Universidad
Autónoma de Chihuahua, Facultad de Ciencias Químicas, Mexico.
Biochar is a carbon based product obtained by pyrolysis of biomass, this
material can have various applications depending on their physicochemical
properties. Applications of biochar include supercapacitors, batteries, fuel cells,
water treatment, among others.
The potential of converting biomass waste to an energy storage device concept
was explored. The present work is focused on the characterization of biochars
produced by pyrolysis of residual resources such as leather, agave angustifolia,
nutshell, corn crops, tomato pruning, and sawdust wastes that usually are
thrown as solid wastes in dump yards. The carbons were obtained by pyrolysis
using temperatures from 500ºC up to 1600ºC for some cases, following different
methodologies such as: solar or conventional pyrolysis, and different chemical
activations. Carbons were characterized by physisorption, XRD, SEM, RAMAN,
elemental analysis, EDS, and Infrared spectroscopy. The principal aim of this
work was to evaluate the electrochemical properties related with energy storage
of the obtained carbons for their application in supercapacitor cells. These
properties were evaluated by cyclic voltammetry in a typical 3-electrode cell
using different aqueous electrolytes, and with the best carbons 2-electrode
supercapacitor cells were assembled and studied by galvanostatic cycles.
Keywords: Biomass, Biochar, Solar pyrolysis
Presenting authors email: akcg@ier.unam.mx