Functional Kevlar-Based Triboelectric Nanogenerator with Impact Energy-Harvesting Property for Power Source and Personal Safeguard
Functional Kevlar-Based Triboelectric Nanogenerator with Impact Energy-Harvesting Property for Power Source and Personal Safeguard
复制标题
具有冲击能量收集特性的功能性凯夫拉摩擦纳米发电机，用于电源和个人防护
DOI：
10.1021/acsami.0c18308
复制
发表时间：
2021
影响因子：
9.5
通讯作者：
Gong Xinglong
中科院分区：
文献类型：
--
作者：
Zhou Jianyu;Wang Sheng;Yuan Fang;Zhang Junshuo;Liu Shuai;Zhao Chunyu;Wang Yu;Gong Xinglong
将凯夫拉纤维与导电剪切增强凝胶相结合，研制了一种具有高速冲击能量收集和防护性能的新型耐冲击自生摩擦电纳米发电机（SS-TENG）。具有能量收集特性的SS-TENG在振荡器压缩下产生的最大功率密度为5.3 mW/m2，电压为13.1 V，可以照亮发光二极管阵列。由于能量吸收效应，设计的SS-TENG可以耗散2880 ~ 1460 N的冲击力，在落锤冲击下表现出抗冲击性能。它还通过输出36.4 V来感知负载力。作为一个自供电传感器，SS-TENG监测各种人体运动，并提供保护免受锤击。有趣的是，一种具有高灵敏度和快速响应的可穿戴鞋底阵列可以区分脚趾的进出运动。更重要的是，该功能性SS-TENG具有优异的抗冲击性能，在弹射激励下耗散了94%的动能。它还收集了高速弹道能量，输出的最大功率密度为3兆瓦/平方米。为此，这种具有保护作用和收集各种冲击能量的SS-TENG在新型电源、智能可穿戴系统和保障领域显示出了良好的应用前景。
A novel shock-resistant, self-generating triboelectric nanogenerator (SS-TENG) with high-speed impact energy-harvesting and safeguarding properties was developed by assembling Kevlar fiber and conductive shear-stiffening gel. The SS-TENG with energy-harvesting property generated a maximum power density of 5.3 mW/m2with a voltage of 13.1 V under oscillator compression and could light up light-emitting diode arrays. Owing to the energy absorption effect, the as-designed SS-TENG could dissipate impact forces from 2880 to 1460 N, showing anti-impact performance under the drop hammer impact. It also sensed the loading forces by outputting 36.4 V. Functionalized as a self-powered sensor, SS-TENG monitored various human movements and provided protection from hammer impact. Interestingly, a wearable sole array with high sensitivity and a fast response could distinguish toe in/out motions. More importantly, this functional SS-TENG presented excellent anti-impact behavior, which dissipated 94% of kinetic energy under bullet-shooting excitation. It also gathered high speed ballistic energy, which outputted a maximum power density of 3 mW/m2. To this end, this SS-TENG with a protection effect and the ability to harvest various impact energy showed promising applications in new power sources, intelligent wearable systems, and safeguard areas.