In recent years, high performance triboelectric nanogenerator (TENG) shows distinguished energy-harvesting property which guarantees its potential applications as a power source. However, collision and harsh impact, occurred in daily life, always injure human beings. Developing novel multifunctional TENG with self-powered mechanosensing and protection properties from violent impact is an urgent and meaningful work. Here, a multifunctional TENG with energy-harvesting, safeguarding and self-powered force-sensing properties was fabricated by assembling shear stiffening gel/polydimethylsiloxane (SSG/PDMS) matrix with GaInSn liquid metal. Operating at 10 Hz, TENG with a size of 50 × 50 × 4 mm³ obtains an output voltage of 35.72 V, current of 5.10 μA, and maximum output power of 182.17 μW. In addition, TENG device generates enhanced output power of 323.97 μW under tensile strain of 80%. Besides harvesting mechanical energy, TENG with fast stimuli-responsive character, has been proven as a self-powered sensor to monitor varieties of physiological movements. More importantly, the TENG device with high damping property enables to dissipate 66.43% of external impact force which provides favorable protection effect. Correspondingly, the distinguished output voltage signals can also reveal and assess different impulsive loads. This work proposes a multifunctional TENG device with energy-harvesting, and utilizing the flexible TENG for safeguarding and self-powered mechanosensing.

近年来，高性能摩擦电纳米发电机（TENG）表现出卓越的能量收集特性，从而保证了其作为电源的潜在应用。然而，在日常生活中发生的碰撞和严酷的冲击总是伤害人类。开发具有自供电机械感和保护特性免受暴力影响的新型多功能TENG是一项紧迫而有意义的工作。在此，通过将剪切硬化凝胶/聚二甲基硅氧烷（SSG / PDMS）基质与GaInSn液态金属组装在一起，制造出具有能量收集，保护和自供电力感测特性的多功能TENG。TENG工作于10 Hz，尺寸为50×50×4 mm ³获得35.72 V的输出电压，5.10μA的电流以及182.17μW的最大输出功率。此外，TENG器件在80％的拉伸应变下可产生323.97μW的增强输出功率。除了收集机械能外，具有快速刺激响应特性的TENG已被证明是一种用于监测各种生理运动的自供电传感器。更重要的是，具有高阻尼性能的TENG装置能够消散66.43％的外部冲击力，从而提供了良好的保护效果。相应地，杰出的输出电压信号也可以揭示和评估不同的脉冲负载。这项工作提出了一种具有能量收集功能的多功能TENG装置，并利用柔性TENG进行维护和自供电机械传感。