Muñoz Bianca K, Serroukh Ilias, Sánchez María, Ureña Alejandro
Material Science and Engineering Area, Universidad Rey Juan Carlos, ESCET, C/Tulipán s/n. Móstoles, 28933 Madrid, Spain.
iScience. 2024 Jul 2;27(8):110433. doi: 10.1016/j.isci.2024.110433. eCollection 2024 Aug 16.
Lignin is an unlimited resource of an aromatic natural polymer useful for multiple applications, though its use remains limited due to the lack of technology developments. The introduction of lignin as coating of fibers and textile for composites is being recently studied with very promising results. Here, commercial woven carbon fibers (WCFs) have been superficially modified following an easy approach to introduce lignin and carbonize it to enhance the electrochemical performance of the fibers. The modified carbon fibers containing lignin were tested as electrodes using KCl 3 M as electrolyte, reaching 5 F/g at 10 mVs. A symmetric supercapacitor was fabricated using these electrodes, and a proof of concept based on a red and yellow light-emitting diode (LED) powered on and a bending test were done. The supercapacitor was able to recover 99% of its capacitance when returned to its original unbent position.
木质素是一种可用于多种应用的芳香族天然聚合物的无限资源，尽管由于技术发展的缺乏，其使用仍然有限。最近，人们正在研究将木质素作为复合材料的纤维和纺织品涂层，取得了非常有前景的成果。在这里，商业编织碳纤维（WCFs）已经通过一种简单的方法进行了表面改性，以引入木质素并将其碳化，从而提高纤维的电化学性能。以含木质素的改性碳纤维作为电极，使用3M KCl作为电解质进行测试，在10mV时达到5F/g。使用这些电极制作了一个对称超级电容器，并基于点亮红色和黄色发光二极管（LED）进行了概念验证和弯曲测试。当超级电容器恢复到原始未弯曲位置时，其电容能够恢复99%。
