Giovagnoli Angelica, D'Altri Giada, Yeasmin Lamyea, Di Matteo Valentina, Scurti Stefano, Di Filippo Maria Francesca, Gualandi Isacco, Cassani Maria Cristina, Caretti Daniele, Panzavolta Silvia, Focarete Maria Letizia, Rea Mariangela, Ballarin Barbara
Department of Industrial Chemistry "Toso Montanari", University of Bologna, Distretto Navile-Via Gobetti 85, 40129 Bologna, Italy.
Applied Science and Technology Department, Politecnico di Torino, Corso Duca Degli Abruzzi, 24, 10129 Torino, Italy.
Gels. 2024 Jul 12;10(7):458. doi: 10.3390/gels10070458.
This work describes a simple, inexpensive, and robust method to prepare a flexible "all in one" integrated hydrogel supercapacitors (HySCs). Preparing smart hydrogels with high electrical conductivity, ability to stretch significantly, and excellent mechanical properties is the last challenge for tailored wearable devices. In this paper, we employed a physical crosslinking process that involves consecutive freezing and thawing cycles to prepare a polyvinyl alcohol (PVA)-based hydrogel. Exploiting the self-healing properties of these materials, the assembly of the different layers of the HySCs has been performed. The ionic conductivity within the electrolyte layer arises from the inclusion of an HSO solution in the hydrogel network. Instead, the electronic conductivity is facilitated by the addition of the conductive polymer PANI-PAMPSA into the hydrogel layers. Electrochemical measures have highlighted newsworthy properties related to our HySCs, opening their use in wearable electronic applications.
这项工作描述了一种制备柔性“一体化”集成水凝胶超级电容器（HySCs）的简单、低成本且稳健的方法。制备具有高电导率、显著拉伸能力和优异机械性能的智能水凝胶是定制可穿戴设备的最后一项挑战。在本文中，我们采用了一种涉及连续冻融循环的物理交联过程来制备基于聚乙烯醇（PVA）的水凝胶。利用这些材料的自愈特性，完成了HySCs不同层的组装。电解质层内的离子电导率源于水凝胶网络中包含的HSO溶液。相反，通过向水凝胶层中添加导电聚合物聚苯胺 - 聚甲基丙烯磺酸钠（PANI - PAMPSA）来促进电子传导。电化学测量突出了与我们的HySCs相关的有价值特性，为其在可穿戴电子应用中的使用开辟了道路。
