Key Laboratory of Advanced Structural Materials, Ministry of Education & Advanced Institute of Materials Science, Changchun University of Technology, Changchun 130012, P. R. China.
Langmuir. 2023 Jun 27;39(25):8855-8864. doi: 10.1021/acs.langmuir.3c00909. Epub 2023 Jun 13.
Lightweight, portability, and sustainability have become key factors of the power source for the rapid development of multifunctional wearable electronic devices. In this work, a washable, wearable, and durable self-charging system for human motion energy harvesting and storage based on asymmetric supercapacitors (ASCs) and triboelectric nanogenerators (TENGs) is investigated. The all-solid-state flexible ASC is composed of a cobalt-nickel layered double hydroxide grown on a carbon cloth (CoNi-LDH@CC) as the positive electrode and activated carbon cloth (ACC) as the negative electrode and exhibits the performance of small size, high flexibility, and superior stability. The device was able to provide a capacity of 345 mF cm and a cycle retention rate of 83% after 5000 cycles, which shows great potential as an energy storage unit. Additionally, flexible silicon rubber-coated carbon cloth (CC) is waterproof and soft and can be used as a TENG textile to gain energy for stable charging of an ASC, which presents an open-circuit voltage and short-circuit current of 280 V and 4 μA, respectively. The ASC and TENG can be assembled to continuously collect and store energy, which provides an all-in-one self-charging system qualified with washable and durable for potential applications in wearable electronics.
轻便、便携和可持续性已成为多功能可穿戴电子设备快速发展的关键因素。在这项工作中，研究了一种基于不对称超级电容器 (ASC) 和摩擦纳米发电机 (TENG) 的可水洗、可穿戴和耐用的自充电系统，用于人体运动能量收集和存储。全固态柔性 ASC 由生长在碳纤维布 (CoNi-LDH@CC) 上的钴镍层状双氢氧化物作为正极和活性炭布 (ACC) 作为负极组成，具有体积小、柔韧性好和稳定性优异的性能。该器件在 5000 次循环后能够提供 345 mF cm 的容量和 83%的循环保持率，显示出作为储能单元的巨大潜力。此外，柔性硅橡胶涂覆的碳纤维布 (CC) 具有防水和柔软的特性，可用作 TENG 纺织品，为 ASC 的稳定充电获取能量，其开路电压和短路电流分别为 280 V 和 4 μA。ASC 和 TENG 可以组装在一起，以连续收集和存储能量，为潜在的可穿戴电子产品应用提供了一种具有水洗和耐用性的一体化自充电系统。
