Centrifugally spun TiO2/C composite fibers prepared from TiS2/PAN precursor fibers as binder-free anodes for LIBS

Authors

Jorge Lopez
Ramiro Gonzalez
Jonathan Ayala
Jesus Cantu
Alexandria Castillo
Jason Parsons, The University of Texas Rio Grande ValleyFollow
Timothy P. Lodge
Mataz Alcoutlabi, The University of Texas Rio Grande ValleyFollow

Document Type

Article

Publication Date

2-2021

Abstract

TiO2/carbon composite-fiber anodes for lithium ion batteries were prepared through the centrifugal spinning of TiS2/polyacrylonitrile (PAN) precursor fibers and subsequent thermal treatment. The TiS2/PAN precursor solutions were prepared by mixing TiS2 nanoparticles (a 2-D layered structure) with PAN in N, N-dimethylformamide (DMF). The thermal treatment of the TiS2 in the centrifugally spun PAN fibers resulted in TiO2/carbon composite fibers. The structure of TiO2 nanoparticles embedded in the carbon-fiber matrix synthesized from the TiS2 starting material may accommodate high amounts of Li ions. The TiO2/C structure may lead to increased specific capacity, improved stability, and enhanced electrochemical performance of the TiO2/C composite electrode after prolonged charge/discharge cycles. The TiO2/C composite-fiber anode delivered discharge and charge capacities at the first cycle of 683 mAhg−1 and 356 mAhg−1, respectively, with a reversible charge capacity of 290 mAhg−1 after 100 cycles at a current density of 100 mAg−1. The TiO2/C composite fibers showed an improvement in the rate performance at higher current densities compared to the graphite anode alone.

Comments

© 2020 Elsevier Ltd. All rights reserved. Original published version available at https://doi.org/10.1016/j.jpcs.2020.109795

NSF: https://par.nsf.gov/servlets/purl/10310124

Recommended Citation

Lopez, Jorge, Ramiro Gonzalez, Jonathan Ayala, Jesus Cantu, Alexandria Castillo, Jason Parsons, Jason Myers, Timothy P. Lodge, and Mataz Alcoutlabi. "Centrifugally spun TiO2/C composite fibers prepared from TiS2/PAN precursor fibers as binder-free anodes for LIBS." Journal of Physics and Chemistry of Solids 149 (2021): 109795. https://doi.org/10.1016/j.jpcs.2020.109795

Creative Commons License

This work is licensed under a Creative Commons Attribution-NonCommercial-No Derivative Works 4.0 International License.

Publication Title

Journal of Physics and Chemistry of Solids

DOI

10.1016/j.jpcs.2020.109795