Zhao Chen, Wan Tao, Yuan Wenxiong, Zheng Zhaoqiang, Jia Xiaoteng, Shu Kewei, Feng Lei, Min Yonggang
School of Materials and Energy, Guangdong University of Technology, Guangzhou, 510006, China.
State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun, 130012, China.
Macromol Rapid Commun. 2022 Oct;43(20):e2200347. doi: 10.1002/marc.202200347. Epub 2022 Jun 16.
Yarn supercapacitors have attracted significant attention for wearable energy storage due to their ability to be directly integrated with garments. Conducting polymer polypyrrole (PPy) based yarn supercapacitors show limited cycling stability because of the huge volume changes during the charge-discharge processes. In addition, laundering may cause damage to such yarn supercapacitors. Here, the fabrication of PPy-based re-stickable yarn supercapacitors is reported with good cycling stability by employing vapor phase polymerization (VPP) and water-soluble polyethylene oxide (PEO) film as the adhesive layer. VPP duration and cycle are controlled to achieve multi-layered PPy electrodes. The assembled yarn supercapacitors show a good cycling stability with capacitance retention of 79.1% after 5000 charge-discharge cycles. The energy stored in the yarn supercapacitor is sufficient to power a photodetector. After gluing the yarn supercapacitors onto a PEO film, the devices can be stunk on and peeled off the garment to avoid the mechanical stresses during the washing process. Three yarn supercapacitors connected in parallel on PEO film show negative changes in electrochemical performance after 5 sticking-peeling cycles. This work provides a facile way to fabricate PPy-based re-stickable energy storage devices with high cycling stability for smart garments.
纱线超级电容器因其能够直接与服装集成，在可穿戴储能领域引起了广泛关注。基于导电聚合物聚吡咯（PPy）的纱线超级电容器由于在充放电过程中存在巨大的体积变化，其循环稳定性有限。此外，洗涤可能会损坏此类纱线超级电容器。在此，通过采用气相聚合（VPP）和水溶性聚环氧乙烷（PEO）薄膜作为粘合剂层，报道了具有良好循环稳定性的基于PPy的可重新粘贴纱线超级电容器的制备。控制VPP的持续时间和循环次数以制备多层PPy电极。组装好的纱线超级电容器显示出良好的循环稳定性，在5000次充放电循环后电容保持率为79.1%。纱线超级电容器中存储的能量足以驱动一个光电探测器。将纱线超级电容器粘贴到PEO薄膜上后，器件可以粘贴在衣服上并从衣服上剥离，以避免洗涤过程中的机械应力。在PEO薄膜上并联连接的三个纱线超级电容器在5次粘贴-剥离循环后，电化学性能出现负变化。这项工作为制备具有高循环稳定性的基于PPy的可重新粘贴储能器件提供了一种简便方法，可用于智能服装。
