Journal
NANOTECHNOLOGY
Volume 28, Issue 43, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/1361-6528/aa84cb
Keywords
carbon fiber; polypyrrole nanowire; supercapacitors; flexible electrode; wearable device
Funding
- National Natural Science Foundation of China [51302246]
- CSC
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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(-1) at 0.128 A g(-1), which is much higher than for supercapacitors based on polypyrrole film/CF (38.3 F g(-1)) and pure CF (0.6 F g(-1)) 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.
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