Ambient Stable Triboelectric Nanogenerator Based on Conductive Filler Modified Silicone Rubber with Gas Barrier Encapsulation for Footstep Energy Conversion

作者：Yi Wei, Yushu Tian, Xiaokang Chen, Xiaokang Chen, Junfeng Chu, Junjie Wang, Xiangyu Chen, Xiangyu Chen, Wenjie Wu, Liqun Zhang · 发表于：Advanced Science · 年份：2025 · DOI：10.1002/advs.202519523 · 被引用次数：9 · 研究领域：Advanced Sensor and Energy Harvesting Materials、Dielectric materials and actuators、Conducting polymers and applications

Abstract Human motion, particularly foot‐ground interaction during locomotion, generates substantial biomechanical energy that remains largely underutilized. Triboelectric nanogenerators (TENGs) have emerged as a promising solution for harvesting such energy, yet their long‐term performance under ambient humidity remains a major challenge for real‐world deployment. Herein, a spring‐assisted contact‐separation mode TENG is reported, composed of high‐temperature vulcanized (HTV) silicone rubber filled with 1 phr of conductive carbon black (600JD). The addition of 600JD increases the surface charge density by 55% compared to unfilled silicone rubber. The optimized device delivers a peak power density of 179.9 mW·m −2 and is capable of powering over 1,900 commercial LEDs. To overcome moisture sensitivity, a flame‐retardant chlorinated isobutylene‐isoprene rubber (CIIR) encapsulation layer with excellent gas barrier properties is introduced, enabling stable operation across a broad relative humidity range (30–90% RH). The device retains 98.3% of its initial short‐circuit current after more than 1 000 000 mechanical cycles, indicating exceptional durability. Beyond energy harvesting, the TENG also functions as a self‐powered sensor capable of footstep detection, step frequency monitoring, and motion pattern recognition. This work presents a resilient and scalable design strategy for ambient‐stable TENGs toward footstep energy harvesting and intelligent sensing under variable enviro...