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<p>Wearable and flexible triboelectric sensors have recently attracted significant interest in the field of smart sports due to their potential for self-powered motion monitoring. In this study, we present a high-performance triboelectric nanogenerator (PP-TENG) based on a dual-network hydrogel composed of polyvinyl alcohol (PVA) and polyacrylamide (PAAm), referred to as PP-hydrogel. The integration of lithium chloride (LiCl) significantly enhances the hydrogel’s ionic conductivity, allowing for tunable electrical output. At a working frequency of 5&#xa0;Hz, the PP-TENG achieves an impressive open-circuit voltage (V<sub>oc</sub>) of 532.71&#xa0;V, short-circuit current (I<sub>sc</sub>) of 40.28 µA, and transferred charge (Q<sub>sc</sub>) of 122.21 nC, yielding a peak power output of 0.95 mW at an optimal load resistance of 3 MΩ. The device exhibits excellent flexibility, stretchability, and mechanical durability, making it ideal for long-term wearable applications. Demonstrated in a basketball motion monitoring scenario, the PP-TENG effectively captures complex joint activities and distinguishes between various dynamic actions, such as walking, running, and jumping. These results highlight the PP-TENG’s potential as a self-powered sensing platform for real-time biomechanical analysis, injury prevention, and performance optimization in intelligent sports systems.</p>

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High-performance double-network hydrogel-based TENG for real-time basketball motion monitoring

  • 期刊论文

  • 发表日期：

    2025年9月3日

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  • Zhaozhao Li,
  • Ji Luo

摘要

Wearable and flexible triboelectric sensors have recently attracted significant interest in the field of smart sports due to their potential for self-powered motion monitoring. In this study, we present a high-performance triboelectric nanogenerator (PP-TENG) based on a dual-network hydrogel composed of polyvinyl alcohol (PVA) and polyacrylamide (PAAm), referred to as PP-hydrogel. The integration of lithium chloride (LiCl) significantly enhances the hydrogel’s ionic conductivity, allowing for tunable electrical output. At a working frequency of 5 Hz, the PP-TENG achieves an impressive open-circuit voltage (Voc) of 532.71 V, short-circuit current (Isc) of 40.28 µA, and transferred charge (Qsc) of 122.21 nC, yielding a peak power output of 0.95 mW at an optimal load resistance of 3 MΩ. The device exhibits excellent flexibility, stretchability, and mechanical durability, making it ideal for long-term wearable applications. Demonstrated in a basketball motion monitoring scenario, the PP-TENG effectively captures complex joint activities and distinguishes between various dynamic actions, such as walking, running, and jumping. These results highlight the PP-TENG’s potential as a self-powered sensing platform for real-time biomechanical analysis, injury prevention, and performance optimization in intelligent sports systems.