• Graphene fibers exhibit exceptional mechanical, electrical, and thermal properties, making them ideal for wearable energy harvesting.
• Fabrication methods such as wet spinning, confined hydrothermal synthesis, and CVD enable scalable production of high-performance graphene fibers.
• GF-based devices can harvest solar, thermal, and moisture energy, offering promising solutions for self-powered wearable electronics.
• Current challenges include improving energy conversion efficiency and integrating these fibers into practical wearable systems.