Fully biocompatible, thermally drawn fiber supercapacitors for long-term bio-implantation.

ABSTRACT: Recent advancements in implantable bioelectronic devices have increased the demand for biocompatible energy sources with long-term electrochemical and mechanical stability. Here, we present a tough hydrogel-based supercapacitor (THBS) fiber, fabricated via a thermal drawing process (TDP), that enables the integration of all components-electrodes, electrolyte, current collectors, and encapsulation-into a single, unified, and mechanically robust fiber-shaped architecture. Through thermal/mechanical optimization and the incorporation of self-healing properties, THBS fibers exhibit durable, high electrochemical performance under dynamic, high-curvature deformations mimicking in vivo physiological motions. Despite a thickness of only a few hundred microns, they maintain mechanical and electroch

SUBMITTER: Jeon S 

PROVIDER: S-EPMC12405512 | biostudies-literature | 2025 Sep

REPOSITORIES: biostudies-literature