Piezoelectric supercapacitors (PSCs) constitute a type of emerging technology that can harvest and store energy simultaneously from natural processes, such as human body motions (breathing, walking, arm-motions, etc.) and waves, which makes them attractive for powering wearable and biomedical devices. However, designing such integrated devices requires in-depth understanding of the physical properties of the individual components, such as the piezoelectric and electrode materials. Herein, we explore the potential of PSCs in wellbeing and healthcare devices, covering key considerations on the electrode materials, electrolytes, and piezoelectric materials. The process of tuning the self-charging characteristics of PSCs with nanocarbons, metals oxides, and composite-based materials is outlined systematically. In addition to material integration, practical demonstrations of the PSCs converting energy from natural processes to operate various wearable and biomedical devices are discussed. Finally, the challenges and future directions for developing efficient PSCs for next-generation self-powered devices are presented.

压电超级电容器 (PSC) 是一种新兴技术，可以同时从人体运动（呼吸、行走、手臂运动等）和波浪等自然过程中收集和储存能量，这使得它们对于为可穿戴和生物医学设备。然而，设计此类集成设备需要深入了解各个组件的物理特性，例如压电和电极材料。在此，我们探索 PSC 在健康和医疗保健设备中的潜力，涵盖电极材料、电解质和压电材料的关键考虑因素。系统地概述了用纳米碳、金属氧化物和复合材料调节 PSC 自充电特性的过程。除了材料整合，讨论了 PSC 从自然过程中转换能量以操作各种可穿戴和生物医学设备的实际演示。最后，介绍了为下一代自供电设备开发高效 PSC 的挑战和未来方向。