College of Graduate Studies: Theses & Dissertations
Term of Award
Summer 2026
Degree Name
Master of Science, Applied Physical Science
Document Type and Release Option
Thesis (open access)
Copyright Statement / License for Reuse
This work is licensed under a Creative Commons Attribution 4.0 License.
Department
Department of Chemistry and Biochemistry
Committee Chair
Ji Wu
Committee Member 1
Marshall Ming
Committee Member 2
John DiCesare
Abstract
Wearable electronic devices require high-capacity flexible batteries to improve user comfort and increase usage time per charge. In this thesis, flexible lithium-ion battery (LIB) electrodes are prepared using a novel and scalable phase inversion method, embedding one-dimensional SnO₂ nanowires and double-walled carbon nanotubes within a porous polyacrylonitrile asymmetric membrane. The optimized electrode delivered an initial specific discharge capacity of 915.93 mAh g⁻¹, approximately 2.5 times greater than conventional graphite anodes, with 61.99% capacity retention after 45 cycles. The incorporation of a carbon mesh substrate further enhanced both electrochemical and mechanical performance, achieving 89.46% capacity retention after 45 cycles and a dynamic Young's modulus of 53 MPa after 5000 bending cycles, confirming outstanding mechanical flexibility. These results demonstrate that porous asymmetric membrane electrodes present a promising and scalable pathway toward the next generation of high-capacity flexible batteries for wearable electronic devices with broad applications in the medical and pharmaceutical sciences.
Recommended Citation
Denemark, David A., "Flexible Membrane Electrodes for Use in High-Capacity Lithium-Ion Batteries" (2026). College of Graduate Studies: Theses & Dissertations. 3191.
https://digitalcommons.georgiasouthern.edu/etd/3191
Research Data and Supplementary Material
No
