fig1

Figure 1. Key components driving the development of fiber-shaped supercapacitors (FSSC), categorized into four focus areas: Mechanisms (EDLC, pseudo-capacitance, hybrid systems), Materials (carbon-based, polymer-based, others), Technologies (spinning, 3D printing, twisting), and Applications (energy storage, power supply, sensing). This framework highlights the critical design considerations advancing FSSCs for wearable electronics. Schematic FSSC image: Reproduced with permission^[23]. EDLC: Electrochemical double-layer capacitance.