Integrating flexible triboelectric nanogenerators (TENGs) into firefighting clothing offers exciting opportunities for wearable portable electronics in personal protective technology. However, it is still a grand challenge to produce eco-friendly TENGs from biodegradable and low-cost natural polymers for mechanical-energy harvesting and self-powered sensing. Herein, conductive polypyrrole (PPy) and natural chitosan (CS)/phytic acid (PA) tribonegative materials were employed onto the Lycra fabric (LC) in turn to assemble the biodegradable and flame-retardant single-electrode mode LC/PPy/CS/PA TENG (abbreviated as LPCP-TENG). The resultant LPCP-TENG exhibits truly wearable breathability (1378.6 mm/s), elasticity (breaking elongation 291 %), and shape adaptivity performance that can produce an open circuit voltage of 0.3 V with 2 N contact pressure at a working frequency of 5 Hz with a limiting oxygen index of 35.2 %. Furthermore, facile monitoring for human motion of firefighters on fireground is verified by LPCP-TENG when used as self-powered flexible tactile sensor. In addition, degradation experiments have shown that waste LPCP-TENG can be fully degraded in soil within 120 days. This work broadens the applicational range of wearable TENG to reduce the environmental effects of abandoned TENG, exhibiting prosperous applications prospects in the field of wearable power source and self-powered motion detection sensor for personal protection application on fireground.

中文翻译：

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可生物降解且阻燃的纤维素基可穿戴摩擦纳米发电机，用于消防服中的机械能收集

将柔性摩擦纳米发电机（TENG）集成到消防服中为个人防护技术中的可穿戴便携式电子产品提供了令​​人兴奋的机会。然而，利用可生物降解且低成本的天然聚合物生产用于机械能收集和自供电传感的环保 TENG 仍然是一个巨大的挑战。本文将导电聚吡咯（PPy）和天然壳聚糖（CS）/植酸（PA）摩擦负性材料依次应用于莱卡织物（LC）上，组装成可生物降解且阻燃的单电极模式LC/PPy/CS/ PA TENG（缩写为LPCP-TENG）。由此产生的 LPCP-TENG 具有真正的可穿戴透气性（1378.6 mm/s）、弹性（断裂伸长率 291%）和形状适应性性能，可在 5 Hz 的工作频率下产生 0.3 V 的开路电压和 2 N 的接触压力极限氧指数为35.2%。此外，当 LPCP-TENG 用作自供电柔性触觉传感器时，可以轻松监测消防员在火场上的人体运动。此外，降解实验表明，废弃LPCP-TENG可在土壤中120天内完全降解。这项工作拓宽了可穿戴TENG的应用范围，以减少废弃TENG对环境的影响，在可穿戴电源和用于火场个人防护应用的自供电运动检测传感器领域展现了广阔的应用前景。