کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7727180 | 1497904 | 2016 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Physicochemical and electrochemical properties of carbon nanotube/graphite nanofiber hybrid nanocomposites for supercapacitor
ترجمه فارسی عنوان
خواص فیزیکوشیمیایی و الکتروشیمیایی نانوکامپوزیتهای نانولولههای کربنی نانولولههای کربنی و گرافیت برای ابررسانای
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کلمات کلیدی
نانولوله کربنی، نانوفیبری گرافیت، ابرخازنها، فیزیکوشیمیایی، مشخصات الکتروشیمیایی،
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
چکیده انگلیسی
This work reports the combination of graphitic nanofibers (GNF) and carbon nanotubes (CNT) as the electrode material for supercapacitors. The hybrid CNT/GNF was prepared via a synthesis route that involved simple sonication and stirring. The loading of CNT was varied from 5 to 40% weight percentages. A specific capacitance of 174Â Fgâ1 has been obtained for 20Â wt% CNT loading at 50Â mVÂ FÂ gâ1th 1Â M H2SO4 aqueous solution as the electrolyte. The addition of 20Â wt% CNT raised the specific capacitance by 87% more than the GNF electrodes. Field Emission Scanning Electron Microscopy (FESEM) and Transmission Electron Microscope (TEM) reveals the random entanglement of CNT and GNF that create diffusion paths for ion transportation. Conformational changes were monitored by Raman spectroscopy, where two dominant peaks (D and G) showed strong intensities and sharp profiles. X-ray Diffraction spectroscopy (XRD) confirmed the purity of CNT/GNF hybrid nanocomposites. 20Â wt% of CNT addition also shows an outstanding thermal stability. The marked improvement of the hybrid performance was attributed to the high conductivity of the two constituent materials, coupled with sufficient accessible active sites for electrochemical reactions that resulted in a synergistic behavior of the materials.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Power Sources - Volume 328, 1 October 2016, Pages 195-202
Journal: Journal of Power Sources - Volume 328, 1 October 2016, Pages 195-202
نویسندگان
Nurul Infaza Talalah Ramli, Suraya Abdul Rashid, Yusran Sulaiman, Md Shuhazlly Mamat, Syazwan Afif Mohd Zobir, Shutesh Krishnan,