Development of a flexible anode for lithium-ion batteries from electrospun carbon-magnetite composite microfibers

ABSTRACT : The development of a binder-free material is gaining ground as a flexible anode in lithium-ion batteries due to the higher specific capacity and possibilities of usage in portable appliances. In this work, magnetite nanoparticles (Fe3O4-NPs) were incorporated into carbon microfibers (CMFs...

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Autores:
Velásquez Márquez, Carlos Andrés
Vásquez Arroyave, Ferley Alejandro
Álvarez Láinez, Mónica Lucía
Zapata González, Andrés Felipe
Calderón Gutiérrez, Jorge Andrés
Tipo de recurso:
Article of investigation
Fecha de publicación:
2022
Institución:
Universidad de Antioquia
Repositorio:
Repositorio UdeA
Idioma:
eng
OAI Identifier:
oai:bibliotecadigital.udea.edu.co:10495/32782
Acceso en línea:
https://hdl.handle.net/10495/32782
https://revistas.udea.edu.co/index.php/ingenieria/article/view/343785
Palabra clave:
Lithium ion batteries
Batería de ion de litio
Material compuesto
Composite materials
Electroquímica
Electrochemistry
Conversión de energía
Energy conversion
Carbón
Coal
Hierro
Iron
http://aims.fao.org/aos/agrovoc/c_1693
http://aims.fao.org/aos/agrovoc/c_3950
http://id.loc.gov/authorities/subjects/sh2011000687
http://vocabularies.unesco.org/thesaurus/concept5984
Rights
openAccess
License
http://creativecommons.org/licenses/by-nc-sa/2.5/co/
Description
Summary:ABSTRACT : The development of a binder-free material is gaining ground as a flexible anode in lithium-ion batteries due to the higher specific capacity and possibilities of usage in portable appliances. In this work, magnetite nanoparticles (Fe3O4-NPs) were incorporated into carbon microfibers (CMFs) by electrospinning technique to improve the specific capacity of active material, retaining the high flexibility of the CMFs. The composite active material (CMFs-Fe3O4) was characterized by Raman spectroscopy, Thermogravimetric analyses (TGA), and transmission electron microscopy (TEM) to determine the composition, structure, and morphology of the composite. Electrochemical tests were done to evaluate the performance of the composite material as an anode in lithium-ion batteries. Fe3O4-NPs with particle sizes from 30 to 40 nm were incorporated into CMFs (800 nm), and the TEM images showed a homogeneous distribution of Fe3O4-NPs. The electrochemical tests evidenced that magnetite incorporation increases the specific capacity by 42% on the first cycle and 20% on the 50th cycle. Similarly, the Coulombic efficiency increases by 20% in the composite material.