One of the critical issues for electret/triboelectric devices is the poor charge viability and stability in humid environments. Herein, we propose a new origami-inspired “W-tube”-shaped triboelectric nanogenerator (W-TENG) with two thin-film electrets folded based on Miura-origami. The Miura-origami fold is capable of transforming flat materials with large surface areas into reduced and compressed complex 3D structures with parallelogram tessellations. The triboelectric power generation components can thus be hermetically sealed inside the “W-tube” to avoid contact with the external humid environment. Furthermore, the elastic nature of the Miura-origami fold endows the proposed W-TENG device with excellent deformability, flexibility, and stretchability. Therefore, it is capable of harvesting kinetic energy from various directions and forms of movement, including horizontal pressing, vertical tapping, and lateral bending. The compact, light weight, and self-rebounding properties of the origami structure also make it convenient for integration into wearable devices. Various parameters of the W-TENG are intensively investigated, including the number of power generation units, original height of the device, acceleration magnitude, excitation direction, and water-proof capability. Triggered by hand tapping impulse excitation in the horizontal and vertical directions, the instantaneous open-circuit voltages can reach 791 V and 116 V with remarkable optimum powers of 691 μW at 50 MΩ and 220 μW at 35 MΩ, respectively. The outcomes of this work demonstrate the fusion of the ancient art of origami, material science, and energy conversion techniques to realize flexible, multifunctional, and water-proof TENG devices.

驻极体/摩擦电器件的关键问题之一是潮湿环境中较差的电荷活力和稳定性。在此，我们提出了一种新的受折纸启发的“W 管”形摩擦纳米发电机（W-TENG），它具有基于 Miura 折纸折叠的两个薄膜驻极体。Miura-origami fold 能够将具有大表面积的平面材料转换为具有平行四边形镶嵌的简化和压缩的复杂 3D 结构。因此，摩擦发电组件可以密封在“W 型管”内，避免与外部潮湿环境接触。此外，Miura-origami 折叠的弹性特性赋予了所提出的 W-TENG 装置出色的变形性、柔韧性和拉伸性。所以，它能够从各种方向和运动形式收集动能，包括水平按压、垂直敲击和横向弯曲。折纸结构的紧凑、重量轻和自回弹特性也使其便于集成到可穿戴设备中。深入研究了W-TENG的各种参数，包括发电机组数量、装置原始高度、加速度大小、励磁方向和防水能力。由水平和垂直方向的手敲击脉冲激励触发，瞬时开路电压可达到 791 V 和 116 V，在 50 MΩ 和 35 MΩ 时的最佳功率分别为 691 μW 和 220 μW。这项工作的成果展示了古代折纸艺术、材料科学、