National Engineering Lab for Textile Fiber Materials & Processing Technology (Zhejiang), Faculty of Materials and Textiles, Zhejiang Sci-Tech University, Hangzhou 310018, People's Republic of China.
Nanotechnology. 2017 Oct 27;28(43):435204. doi: 10.1088/1361-6528/aa84cb. Epub 2017 Aug 8.
Wearable electronics are in high demand, requiring that all the components are flexible. Here we report a facile approach for the fabrication of flexible polypyrrole nanowire (NPPy)/carbon fiber (CF) hybrid electrodes with high electrochemical activity using a low-cost, one-step electrodeposition method. The structure of the NPPy/CF electrodes can be easily controlled by the applied electrical potential and electrodeposition time. Our NPPy/CF-based electrodes showed high flexibility, conductivity, and stability, making them ideal for flexible all-solid-state fiber supercapacitors. The resulting NPPy/CF-based supercapacitors provided a high specific capacitance of 148.4 F g at 0.128 A g, which is much higher than for supercapacitors based on polypyrrole film/CF (38.3 F g) and pure CF (0.6 F g) under the same conditions. The NPPy/CF-based supercapacitors also showed high bending and cycling stability, retaining 84% of the initial capacitance after 500 bending cycles, and 91% of the initial capacitance after 5000 charge/discharge cycles.
可穿戴电子产品需求旺盛，要求所有组件都具有柔韧性。在这里，我们报告了一种使用低成本、一步电沉积方法制造具有高电化学活性的柔性聚吡咯纳米线（NPPy）/碳纤维（CF）杂化电极的简便方法。通过施加的电势和电沉积时间可以轻松控制 NPPy/CF 电极的结构。我们的 NPPy/CF 基电极具有高柔韧性、导电性和稳定性，非常适合用于柔性全固态纤维超级电容器。基于 NPPy/CF 的超级电容器的比电容高达 148.4 F g，在 0.128 A g 下，比基于聚吡咯膜/CF（38.3 F g）和纯 CF（0.6 F g）的超级电容器高得多。基于 NPPy/CF 的超级电容器还表现出高弯曲和循环稳定性，在 500 次弯曲循环后保留初始电容的 84%，在 5000 次充放电循环后保留初始电容的 91%。
