With the development of smart grids, the demand for monitoring the condition of transmission is becoming high. Harvesting magnetic energy of transmission lines is a feasible approach to provide a sustainable power source for condition monitoring sensors. However, energy harvesting methods for transmission lines are constrained by size and service life. We report an antifatigue triboelectric nanogenerator based on a swinging structure (S-TENG) for magnetic energy harvesting. The S-TENG is composed of several magnets attached to a flexible substrate, which is laminated with a sponge layer, a copper film, and a polytetrafluoroethylene film. The laminated layer acts both as a tribo-layer and as a beam. The distinct structure without a stiff termination also avoids vibration fatigue and ensures the efficient contact of triboelectric layers with each other. The S-TENG presents a maximum peak power of 0.78 mW under 30 MΩ loading resistance. This work reveals the potential for harvesting alternating magnetic energy of transmission lines as an energy source for low-power electronic appliances.

随着智能电网的发展，对输电状态监测的需求越来越高。收集传输线的磁能是为状态监测传感器提供可持续电源的可行方法。然而，传输线的能量收集方法受到尺寸和使用寿命的限制。我们报告了一种基于摆动结构（S-TENG）的抗疲劳摩擦纳米发电机，用于磁能收集。S-TENG 由多个磁铁组成，它们附着在柔性基板上，基板上层压有海绵层、铜膜和聚四氟乙烯膜。层压层既用作摩擦层又用作梁。没有刚性终端的独特结构也避免了振动疲劳并确保摩擦电层彼此有效接触。S-TENG 在 30 MΩ 负载电阻下的最大峰值功率为 0.78 mW。这项工作揭示了收集传输线的交变磁能作为低功率电子设备能源的潜力。