Large-Scale Nanofiber Manufacturing| In-situ bonding enables robust fluorinatedpoly(imide-siloxane)based triboelectricnanogenerator for firefighter motion andlocation monitoring

Prof. Liu Yong at Tiangong University Nano Energy (IF 16.8): Triboelectric Nanogenerator for Firefighter Motion and Position Monitoring

Challenge: Fluorinated polyimide textile-based triboelectric nanogenerators (TENGs) for energy harvesting in high-temperature environments still face inherent limitations including poor mechanical properties and short service life.

Method: Prof. Liu Yong and Prof. Liu Yanbo at Tiangong University successfully synthesized fluorinated polyimide-siloxane (FPIS) and fabricated core-shell structured yarns via electrospinning, with FPIS as the sheath fiber and stainless steel as the core fiber.

Innovation 1: The mechanical properties of sheath fibers were significantly enhanced through flexible siloxane modification and in-situ bonding of nanofibers during thermal imidization, achieving a tensile strength of 13.4 MPa (68× improvement over unmodified fluorinated polyimide).

Innovation 2: The textile-based TENG with core-shell structure demonstrates exceptional flexibility, abrasion resistance, water resistance, breathability, heat resistance, and electrical output performance.

Innovation 3: In single-electrode mode, it delivers an open-circuit voltage (Voc) of 62.5 V (maintaining 33.6 V at 250°C). This smart wearable textile can identify firefighters' motion states and monitor their positions in real-time, providing effective safety protection during rescue operations.