完整後設資料紀錄
DC 欄位 | 值 | 語言 |
---|---|---|
dc.contributor.author | Kumar, Amit | en_US |
dc.contributor.author | Kumar, Nagesh | en_US |
dc.contributor.author | Sharma, Yogesh | en_US |
dc.contributor.author | Leu, Jihperng | en_US |
dc.contributor.author | Tseng, Tseung Yuen | en_US |
dc.date.accessioned | 2019-09-02T07:46:10Z | - |
dc.date.available | 2019-09-02T07:46:10Z | - |
dc.date.issued | 2019-08-06 | en_US |
dc.identifier.issn | 1931-7573 | en_US |
dc.identifier.uri | http://dx.doi.org/10.1186/s11671-019-3100-1 | en_US |
dc.identifier.uri | http://hdl.handle.net/11536/152581 | - |
dc.description.abstract | Herein, we report a novel, simple, and cost-effective way to synthesize flexible and conductive rGO and rGO/MWCNT freestanding films. The effects of MWCNT addition on the electrochemical performance of rGO/MWCNT nanocomposite films are investigated in some strong base aqueous electrolytes, such as KOH, LiOH, and NaOH via three-electrode system. The supercapacitor behavior of the films is probed via cyclic voltammetry, galvanostatic charging-discharging, and electrochemical impedance spectroscopy. The structural and morphological studies of the films are performed by X-ray diffractometer, Raman spectrometer, surface area analyzer, thermogravimetric analysis, field emission scanning electron microscope and transmission electron microscope. The rGO/MWCNT film synthesized with 10 wt% MWCNTs (GP10C) exhibits high specific capacitance of 200 Fg(-1), excellent cyclic stability with 92% retention after 15,000 long cycle test, small relaxation time constant (similar to 194 ms), and high diffusion coefficient (7.8457 x 10(-9) cm(2) s(-1)) in 2 M KOH electrolyte. Furthermore, the symmetric supercapacitor coin cell with GP10C as both anode and cathode using 2 M KOH as electrolyte demonstrates high energy density of 29.4 Whkg(-1) and power density of 439 Wkg(-1) at current density 0.1 Ag-1 and good cyclic stability with 85% retention of the initial capacitance at 0.3 Ag-1 after 10,000 cycles. Such a high performance of the GP10C film in the supercapacitor can be ascribed to the large surface area and small hydration sphere radius and high ionic conductivity of K+ cations in KOH electrolyte. | en_US |
dc.language.iso | en_US | en_US |
dc.subject | Graphene | en_US |
dc.subject | Reduced graphene oxide | en_US |
dc.subject | MWCNTs | en_US |
dc.subject | Specific capacitance | en_US |
dc.subject | Supercapacitor | en_US |
dc.subject | Energy and power densities | en_US |
dc.title | Synthesis of Free-Standing Flexible rGO/MWCNT Films for Symmetric Supercapacitor Application | en_US |
dc.type | Article | en_US |
dc.identifier.doi | 10.1186/s11671-019-3100-1 | en_US |
dc.identifier.journal | NANOSCALE RESEARCH LETTERS | en_US |
dc.citation.volume | 14 | en_US |
dc.citation.issue | 1 | en_US |
dc.citation.spage | 0 | en_US |
dc.citation.epage | 0 | en_US |
dc.contributor.department | 材料科學與工程學系 | zh_TW |
dc.contributor.department | 電子工程學系及電子研究所 | zh_TW |
dc.contributor.department | Department of Materials Science and Engineering | en_US |
dc.contributor.department | Department of Electronics Engineering and Institute of Electronics | en_US |
dc.identifier.wosnumber | WOS:000479122100001 | en_US |
dc.citation.woscount | 0 | en_US |
顯示於類別: | 期刊論文 |