The last several decades have witnessed the tremendous achievement of energy storage devices such as batteries and supercapacitors in the field of charging portable electronic devices. However, the frequent charging requirement and inconvenient device replacement greatly restrict the further practical application of energy storage devices in self-powered systems for human life. Great efforts have been devoted to integrating TENG with energy storage devices to provide the sustainable power supply for electronic devices. In this review article, the recent progress of flexible TENG-based self-charging power units (SCPUs) was presented. Firstly, the working modes and triboelectric series of TENG were introduced. Next, the working principle, research progress of flexible/wearable SCPUs, and strategies to improve energy conversion efficiency were also demonstrated. Finally, the main challenges that need to be overcome when designing and optimizing TENG-based SCPUs were also highlighted.

过去的几十年见证了在便携式电子设备充电领域中，诸如电池和超级电容器之类的能量存储设备的巨大成就。然而，频繁的充电需求和不便的设备更换极大地限制了能量存储设备在用于人类生命的自供电系统中的进一步实际应用。致力于将TENG与能量存储设备集成在一起，以为电子设备提供可持续的电源。在这篇评论文章中，介绍了基于TENG的灵活自充电功率单元（SCPU）的最新进展。首先介绍了TENG的工作方式和摩擦电级数。接下来，工作原理，柔性/可穿戴式SCPU的研究进展，还展示了提高能量转换效率的策略。最后，还强调了设计和优化基于TENG的SCPU时需要克服的主要挑战。