摩擦电效应
纳米发生器
材料科学
凯夫拉
无线
警报
纳米技术
物联网
复合材料
电信
环氧树脂
计算机科学
嵌入式系统
压电
作者
Wenhui Wang,Jianyu Zhou,Sheng Wang,Yuan Fang,Shuai Liu,Junshuo Zhang,Xinglong Gong
出处
期刊:Nano Energy
[Elsevier]
日期:2022-01-01
卷期号:91: 106657-106657
被引量:18
标识
DOI:10.1016/j.nanoen.2021.106657
摘要
An enhanced Kevlar-based triboelectric nanogenerator (EK-TENG) with excellent safeguarding and stable sensing capability in harsh loading environments was developed by integrating shear thickening materials and graphene on Kevlar fabric. EK-TENG, whose maximum peak power density reached as high as 25.8 mW/m 2 under oscillator loadings of 40 N and 10 Hz, could directly power commercial LEDs, capacitors and supercapacitors. In addition, the 30-layer EK-TENG with the greatest fiber friction dissipated drop hammer impact force from 1820 N to 439 N under low-speed impact. EK-TENG with anti-ballistic property enabled to resist 126.6 m/s bullet shooting which was higher than 90.1 m/s of neat Kevlar. Besides, EK-TENG effectively absorbed and dissipated 87.4% of the explosion wave energy under blast loading which exhibited excellent safeguarding properties. Furthermore, EK-TENG could generate voltage signals under various impact loadings which could act as self-powered sensor to monitor external stimuli. Finally, a smart TENG-based wireless passive sensor alarm system with high sensitivity was designed to monitor and warn impact dangers, which opened up a new avenue for the development of next generation intelligent protective clothing. • A wearable EK-TENG exhibited excellent anti-impact and self-powered sensing. • EK-TENG directly powered electronics and stably detected external impacts. • Ballistic limit velocity of EK-TENG was increased by 40.5% compared with Kevlar. • EK-TENG dissipated 87.4% of the explosion wave pressure under blast loading. • An intelligent TENG-based wireless passive sensor alarm was designed.
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