Wang Wen, Cao Jie, Yu Jiawen, Tian Fajuan, Luo Xiaoyu, Hao Yiting, Huang Jiyan, Wang Fucheng, Zhou Weiqiang, Xu Jingkun, Liu Ximei, Yang Hanjun
Jiangxi Key Laboratory of Flexible Electronics, Flexible Electronics Innovation Institute, Jiangxi Science & Technology Normal University, Nanchang 330013, China.
School of Chemistry and Chemical Engineering, Jiangxi Science & Technology Normal University, Nanchang 330013, China.
Polymers (Basel). 2023 Apr 12;15(8):1856. doi: 10.3390/polym15081856.
Supercapacitors are widely used in various fields due to their high power density, fast charging and discharging speeds, and long service life. However, with the increasing demand for flexible electronics, integrated supercapacitors in devices are also facing more challenges, such as extensibility, bending stability, and operability. Despite many reports on stretchable supercapacitors, challenges still exist in their preparation process, which involves multiple steps. Therefore, we prepared stretchable conducting polymer electrodes by depositing thiophene and 3-methylthiophene on patterned 304 stainless steel (SS 304) through electropolymerization. The cycling stability of the prepared stretchable electrodes could be further improved by protecting them with poly(vinyl alcohol)/sulfuric acid (PVA/HSO) gel electrolyte. Specifically, the mechanical stability of the polythiophene (PTh) electrode was improved by 2.5%, and the stability of the poly(3-methylthiophene (P3MeT) electrode was improved by 7.0%. As a result, the assembled flexible supercapacitors maintained 93% of their stability even after 10,000 cycles of strain at 100%, which indicates potential applications in flexible electronics.
超级电容器因其高功率密度、快速充放电速度和长使用寿命而被广泛应用于各个领域。然而，随着对柔性电子产品需求的不断增加，设备中的集成超级电容器也面临着更多挑战，如可扩展性、弯曲稳定性和可操作性。尽管有许多关于可拉伸超级电容器的报道，但它们的制备过程仍存在挑战，该过程涉及多个步骤。因此，我们通过电聚合将噻吩和3-甲基噻吩沉积在图案化的304不锈钢（SS 304）上，制备了可拉伸导电聚合物电极。通过用聚乙烯醇/硫酸（PVA/HSO）凝胶电解质对制备的可拉伸电极进行保护，可以进一步提高其循环稳定性。具体而言，聚噻吩（PTh）电极的机械稳定性提高了2.5%，聚（3-甲基噻吩）（P3MeT）电极的稳定性提高了7.0%。结果，组装好的柔性超级电容器即使在100%应变下循环10000次后仍保持其稳定性的93%，这表明其在柔性电子产品中具有潜在应用。
