Mechanical Engineering Faculty Publications
Document Type
Article
Publication Date
6-18-2026
Abstract
Introduction: Silicon dioxide (SiO2) fiber structures have attracted attention as alternative anode materials for lithium-ion batteries because of their ability to improve cycling stability compared to commercial silicon particles.
Materials and methods: SiO2 composite fibers were prepared by centrifugal spinning of polyvinylpyrrolidone (PVP)/SiO2 precursor solutions followed by calcination at 500–700 ◦C for different holding times to produce short-fiber composites and micro-belt SiO2 fiber structures. The morphology and crystal structure of the SiO2 short fibers and micro-belts were characterized by scanning electron microscope (SEM), X-ray diffraction (XRD), and X-ray Photoelectron Spectroscopy (XPS). Electrochemical performance was evaluated using CR2032 half-cells.
Results: The calcination temperature strongly influenced morphology, oxidation behavior, and electrochemical performance. Samples treated at 500 ◦C retained short-fiber morphologies but exhibited unstable cycling behavior because of incomplete oxidation. The sample calcined at 600 ◦C for 3 h exhibited improved cycling stability associated with a more oxidized surface and belt-like morphology. Samples treated at 700 ◦C showed collapsed structures and reduced reversible capacity.
Conclusions: The results demonstrated that the calcination conditions strongly influenced the relationship between morphology evolution, oxidation state, and electrochemical stability in centrifugally spun SiO2 composite fibers. These findings provide a foundation for the future development of SiO2 fiber structures for use as composite anodes in lithium-ion batteries.
Recommended Citation
Guerrero, Alejandra, Valeria Tirado, Jason Parsons, and Mataz Alcoutlabi. “Centrifugally Spun Silica Fibers for Lithium-Ion Battery Anodes: Structure and Cycling Stability.” Academia Materials Science 3, no. 2 (2026). https://doi.org/10.20935/AcadMatSci8367
Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 International License.
Publication Title
Academia Materials Science
DOI
10.20935/AcadMatSci8367
Comments
© 2026 copyright by the authors. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license. (https://creativecommons.org/licenses/by/4.0/)