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

Creative Commons License
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.

OCLC Number

1608237546

Research Data and Supplementary Material

No

Download

Share

COinS