(722d) Fabrication of Multifunctional Coaxial Fiber Batteries for Energy Applications

This study presents the fabrication of multifunctional coaxial fiber batteries engineered for advanced energy storage and seamless integration into flexible textile systems. Utilizing a dry-jet wet spinning process, a core–sheath architecture is developed, enabling precise nanoscale alignment of polymer electrodes and gel electrolyte interfaces. This configuration promotes efficient ion transport, mechanical durability, and structural integrity. A polymer gel electrolyte is incorporated to facilitate stable ionic conduction, while solvent exchange gradients enhance interfacial adhesion and overall composite stability. The outer protective layer features a self-healing mechanism and anti-corrosion polymers, offering enhanced resistance to mechanical damage and environmental exposure. These coaxial fiber batteries demonstrate key advantages—miniaturization, weavability, breathability, and system-level integrability—positioning them as promising candidates for next-generation wearable electronics and smart textile applications.