基于摩擦纳米发电机的可穿戴能源器件

Triboelectric nanogenerator based wearable energy harvesting devices

随着电子器件向着小型化、功能化的方向迈进,可穿戴电子器件受到越来越多的关注,但是可穿戴电子器件的能源供给问题目前仍亟待解决.基于摩擦起电与静电感应耦合效应的摩擦纳米发电机具有成本低、选材广、柔性等特点,可以收集人体的低频、不规律能量并高效地转化为电能,在可穿戴带能源器件领域有着巨大的发展潜力.本文将首先介绍摩擦纳米发电机的四种基本工作模式以及摩擦起电机理的最新研究,然后从贴敷于人体皮肤的直接式能源收集与附着于衣物、鞋子等人体附属物的间接式能源收集两个部分详细综述基于摩擦纳米发电机的可穿戴能源器件的研究进展.最后,对用于驱动电子器件的能量管理模块进行系统介绍,分析讨论目前可穿戴能源器件发展中的问题和瓶颈,探讨未来的发展方向.

With the miniaturization and functionalization of electronic devices,wearable electronics has drawn generally attention,but the energy supply for wearable electronics becomes one of the most burning questions.The triboelectric nanogenerator based on the coupling effects of electrostatic induction and triboelectrification,which has low cost and wide material selection attributes,proves to be a powerful technology for converting low-frequency mechanical energy into electricity.In this review,the four fundamental modes of triboelectric nanogenerator and the physical mechanism of contact-electrification are presented first.Then,we introduce the research progress of wearable from the direct and indirect aspects.Directly wearable triboelectric nanogenerator can be integrated into a skin while indirectly wearable device is only allowed to assemble into user’s clothing or its appendages.In addition,the power management circuits for driving electronic devices and energy storage are summarized.Finally,we discuss the current bottlenecks and present our perspectives on future directions in this field.