Scavenging the energy of human motions has attracted widespread attentions with the development of wearable electronics. This paper for the first time proposed a progressive triboelectric nanogenerator based on macro-triangle-prism-shaped conductive polyurethane (PU) foam and polytetrafluoroethylene (PTFE) film, which occupy the top and bottom spots of the triboelectric table respectively. The proposed macro-structured conductive PU foam also integrates the functions of spring, spacer and electrode. Thanks to the innovative structures and chosen of the materials, an extended current pulse width is obtained. A maximum RMS power density of 100 nJ/cm²/tap was obtained with a 60 MΩ resistive load and press force of 10 [email protected] Hz. By regulating the TENG with a Bennet doubler conditioning circuit, the ubiquitous voltage saturation phenomenon when charging a storage capacitor using full-wave rectifiers is avoided. Moreover, the energy per cycle, charging efficiency and totally stored energy can be exponentially pumped up. With a Bennet circuit charging a 5 nF capacitor, a harvested energy density of ~ 710 nJ/cm²/tap was obtained when voltage across the capacitor was 400 V. Putting the device under sole within 25 human steps, the totally stored energy was 0.43 mJ with a Bennet circuit, 3.6 times higher than that using a full-wave rectifier (0.12 mJ). The Bennet was proven better for regulating the triboelectric nanogenerators with long operation-time compared to the classical full-wave rectifier.

随着可穿戴电子设备的发展，消除人体运动的能量已经引起了广泛的关注。本文首次提出了一种基于大三角形棱柱形导电聚氨酯泡沫和聚四氟乙烯薄膜的渐进式摩擦电纳米发电机，它们分别占据了摩擦电台的顶部和底部。拟议的宏观结构导电PU泡沫还集成了弹簧，垫片和电极的功能。得益于创新的结构和材料的选择，获得了扩展的电流脉冲宽度。最大RMS功率密度为100 nJ / cm ²/ tap是在60MΩ的电阻负载和10 [email protected] Hz的按压力下获得的。通过使用Bennet倍增器调节电路调节TENG，可以避免在使用全波整流器为存储电容器充电时普遍存在的电压饱和现象。此外，每个周期的能量，充电效率和全部存储的能量都可以按指数级增加。使用Bennet电路为5 nF电容器充电时，收获的能量密度约为710 nJ / cm ²/ tap是在电容器两端的电压为400 V时获得的。将器件置于底部的位置以25个人为步长，使用Bennet电路的总存储能量为0.43 mJ，比使用全波整流器（0.12 mJ）高3.6倍。 。事实证明，与传统的全波整流器相比，Bennet可以更好地调节摩擦电纳米发电机，且具有较长的运行时间。