The capability of sensor systems to efficiently scavenge their operational power from stray, weak environmental energies through sustainable pathways could enable viable schemes for self‐powered health diagnostics and therapeutics. Triboelectric nanogenerators (TENG) can effectively transform the otherwise wasted environmental, mechanical energy into electrical power. Recent advances in TENGs have resulted in a significant boost in output performance. However, obstacles hindering the development of efficient triboelectric devices based on biocompatible materials continue to prevail. Being one of the most widely used polymers for biomedical applications, polyvinyl alcohol (PVA) presents exciting opportunities for biocompatible, wearable TENGs. Here, the holistic engineering and systematic characterization of the impact of molecular and ionic fillers on PVA blends’ triboelectric performance is presented for the first time. Triboelectric devices built with optimized PVA‐gelatin composite films exhibit stable and robust triboelectricity outputs. Such wearable devices can detect the imperceptible skin deformation induced by the human pulse and capture the cardiovascular information encoded in the pulse signals with high fidelity. The gained fundamental understanding and demonstrated capabilities enable the rational design and holistic engineering of novel materials for more capable biocompatible triboelectric devices that can continuously monitor vital physiological signals for self‐powered health diagnostics and therapeutics.

中文翻译：

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在自供电可穿戴心血管监测中用于高性能摩擦电设备的生物相容性聚乙烯醇共混物中的整体工程聚合物-聚合物和聚合物-离子相互作用。

传感器系统能够通过可持续途径有效地从杂散，弱小的环境能量中清除其操作能力的能力，可以为自供电健康诊断和治疗方案提供可行的方案。摩擦电纳米发电机（TENG）可以有效地将原本浪费的环境机械能转化为电能。TENG的最新进展已大大提高了输出性能。然而，阻碍基于生物相容性材料的有效摩擦电器件的开发的障碍继续盛行。作为生物医学应用中使用最广泛的聚合物之一，聚乙烯醇（PVA）为生物相容性，可穿戴的TENG带来了令人兴奋的机遇。这里，首次介绍了分子和离子填料对PVA共混物摩擦电性能的影响的整体工程和系统表征。用优化的PVA-明胶复合薄膜制成的摩擦电器件显示出稳定而强劲的摩擦电输出。这种可穿戴设备可以检测到人类脉搏引起的无法察觉的皮肤变形，并以高保真度捕获脉搏信号中编码的心血管信息。所获得的基本理解和证明的能力使得能够对功能更强大的生物相容性摩擦电动设备进行新颖材料的合理设计和整体工程设计，从而能够连续监测重要的生理信号以进行自供电的健康诊断和治疗。