With the continuous development of human society and urban construction, exploring sustainable power sources of monitor and protection systems for city’s infrastructure is becoming more and more urgent. Scavenging ambient fluid flow energy to efficiently and conveniently power electric devices has potential applications for pipeline systems, especially in remote areas. Here, a multi-cylinder-based hybridized electromagnetic-triboelectric nanogenerator (MCNG) is reported to harvest two types of fluid energy at the same time to double the working frequency of the hybrid NG. The introduction of Nylon film effectively improved the durability and output performance. And the structure to transmit external mechanical through magnetic coupling is easy to packaging and assembly, which provides a stable inner environment. Moreover, the hybrid nanogenerator was demonstrated to effectively harvest energy from wind and water flow to power 1075 LEDs and a temperature sensor. Furthermore, a self-powered wireless pipeline leakage monitoring system and a self-powered cathodic protection system based on the MCNG are developed and illustrated. This work provides a prospective strategy for hybrid nanogenerator to improve working frequency and output stability for practical applications.

随着人类社会和城市建设的不断发展，探索可持续的城市基础设施监控保护系统电源变得越来越紧迫。清除周围流体流动能量以高效方便地为电气设备供电具有管道系统的潜在应用，尤其是在偏远地区。在这里，据报道，一种基于多缸的混合电磁摩擦纳米发电机 (MCNG) 同时收集两种流体能量，使混合 NG 的工作频率加倍。尼龙薄膜的引入有效提高了耐用性和输出性能。并且通过磁耦合传递外部机械的结构易于封装和组装，提供了一个稳定的内部环境。而且，混合纳米发电机被证明可以有效地从风和水流中获取能量，为 1075 个 LED 和一个温度传感器供电。此外，开发并说明了基于MCNG的自供电无线管道泄漏监测系统和自供电阴极保护系统。这项工作为混合纳米发电机提供了一种前瞻性策略，以提高实际应用的工作频率和输出稳定性。