As an environmentally friendly and renewable energy source, triboelectric nanogenerator (TENG) offers a fresh solution to the energy scarcity problem. However, the conventional three-dimensional (3D) TENG, which exhibits heavy angular dependence in energy harvesting, struggles to efficiently capture complex biological kinetic energy in practical applications. This study addresses this challenge by developing a novel flexible arc-shaped triboelectric nanogenerator (F-TENG). In comparison with traditional 3D flexible-based TENG, this generator notably minimizes the angular dependence on motion direction. Particularly for non-vertical mechanical energy harvesting, F-TENG can enhance collection efficiency by 35.5 %. Experimental results demonstrate that the open-circuit voltage and current of F-TENG textiles are 3 times and 2.6 times higher, respectively than those of conventional 3D flexible-based TENG. Its accuracy in detecting and identifying complex motions reaches 86.8 %, marking a 37.8 % improvement over traditional 3D-TENG. This study presents a promising perspective on the structural design of all directions and highly efficient biomechanical energy harvesting and its application in the field of intelligent sensing.

中文翻译：

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柔性弧形摩擦纳米发电机，用于全方位、高效的生物力学能量收集和人体运动监测


作为一种环保的可再生能源，摩擦纳米发电机（TENG）为解决能源短缺问题提供了新的解决方案。然而，传统的三维（3D）TENG在能量收集方面表现出严重的角度依赖性，在实际应用中很难有效地捕获复杂的生物动能。本研究通过开发一种新型柔性弧形摩擦纳米发电机（F-TENG）来解决这一挑战。与传统的基于柔性的 3D TENG 相比，该发生器显着最小化了对运动方向的角度依赖性。特别是对于非垂直机械能收集，F-TENG可以将收集效率提高35.5%。实验结果表明，F-TENG纺织品的开路电压和电流分别是传统3D柔性TENG的3倍和2.6倍。其检测和识别复杂运动的准确率达到86.8%，比传统3D-TENG提高了37.8%。该研究为全方位的结构设计和高效生物力学能量收集及其在智能传感领域的应用提供了广阔的前景。