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首页> 外文期刊>Journal of Applied Polymer Science >Electrospun polyaniline nanofibers web electrodes for supercapacitors
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Electrospun polyaniline nanofibers web electrodes for supercapacitors

机译：静电纺丝聚苯胺纳米纤维网电极

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摘要

Polyaniline nanofibers (PANI-NFs) web are fabricated by electrospinning and used as electrode materials for supercapacitors. Field-emission scanning electron microscope micrographs reveal nanofibers web were made up of high aspect ratio (>50) nanofibers of length ～30 μm and average diameter ～200 nm. Their electrochemical performance in aqueous (1M H _2SO_4 and Na_2SO_4) and organic (1M LiClO_4 in propylene carbonate) electrolytes is compared with PANI powder prepared by in situ chemical oxidative polymerization of aniline. The electrochemical properties of PANI-NFs web and PANI powder are studied using cyclic voltammetry, galvanostatic charge/discharge, and electrochemical impedance spectroscopy. PANI-NFs web show higher specific capacitance (～267 F g~(-1)) than chemically synthesized PANI powder (～208 F g ~(-1)) in 1M H_2SO_4. Further, PANI-NFs web demonstrated very stable and superior performance than its counterpart due to interconnected fibrous morphology facilitating the faster Faradic reaction toward electrolyte and delivered specific capacitance ～230 F g~(-1) at 1000th cycle. Capacitance retention of PANI-NFs web (86%) is higher than that observed for PANI powder (48%) indicating the feasibility of electro spun PANI-NFs web as superior electrode materials for supercapacitors.
机译：聚苯胺纳米纤维（PANI-NFs）纤维网是通过静电纺丝制成的，并用作超级电容器的电极材料。场发射扫描电子显微镜显微照片显示，纳米纤维网是由长径比（> 50），长度约30μm，平均直径约200 nm的纳米纤维组成的。将其在水性（1M H _2SO_4和Na_2SO_4）和有机（碳酸亚丙酯中的1M LiClO_4）电解质中的电化学性能与通过苯胺原位化学氧化聚合制备的PANI粉末进行了比较。使用循环伏安法，恒电流充/放电和电化学阻抗谱研究了PANI-NFs纤维网和PANI粉末的电化学性能。在1M H_2SO_4中，PANI-NFs纤维网比化学合成的PANI粉末（〜208 F g〜（-1））具有更高的比电容（〜267 F g〜（-1））。此外，PANI-NFs纤维网表现出非常稳定和优越的性能，这是由于相互连接的纤维形态促进了法拉第对电解质的更快反应，并在第1000个循环时提供了约230 F g〜（-1）的比电容。 PANI-NFs纤维网的电容保持率（86％）高于PANI粉末（48％）的电容保持率，表明电纺PANI-NFs纤维网可作为超级电容器的优质电极材料。

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