Advances and Insights in 1D Energy Storage Strategy: Design, Analysis, and Applications of Fibrous Batteries

Fibrous batteries have emerged as transformative energy storage solutions for next-generation wearable electronics. Unlike rigid or planar flexible batteries, fibrous batteries exhibit unique one-dimensional architectures that enable system integration while maintaining the flexibility and stretchability of textiles. However, their development faces critical challenges in balancing the electrochemical performance with the mechanical adaptability. This review systematically summarizes recent advancements while giving our thoughts on fibrous batteries through a series of aspects of fabrication strategies, characterization techniques, and potential applications. Meanwhile, we shared our prospects and insights in the field of fibrous batteries, such as electric field distribution and the mechano-electrochemical properties, which are critically important for their practical applications.