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Template-free graphitic carbon nitride nanosheets coated with polyaniline nanofibers as an electrode material for supercapacitor applications
Renewable Energy ( IF 9.0 ) Pub Date : 2021-02-24 , DOI: 10.1016/j.renene.2021.02.106
Arun Kumar , Manika Khanuja

An eco-friendly and facile in-situ polymerization method was used to develop template free acid-etched graphitic carbon nitride (TGCN) nanosheets with optimized PANI nanofibers. PANI nanofibers grown on TGCN nanosheets offer large surface area, high porosity and unique charge transfer properties. The rapid agglomeration of TGCN nanosheets throughout electrochemical measurements lowers the specific capacitance due to its reduced shelf life which was overcome by the incorporation of a suitable polymer (PANI) as a spacer. Herein, We report the comparative electrochemical performance of TGCN/PANI nanocomposites as a function of morphology, composition, surface area and pore size study was obtained using X-Ray diffraction (XRD), Field emission scanning electron microscopy (FESEM), Transmission electron microscopy (TEM), X-Ray Photoelectron Spectroscopy (XPS) and Brunauer-Emmett-Teller (BET) N2 adsorption-desorption. Herein, we prepared TGCN/PANI nanocomposites, which are also optimized to act as a highly efficient electrode nanocomposite for high-performance supercapacitor applications. The optimized TGCN/PANI (TCP50) nanocomposite showed a high specific capacitance of 298.31 F/g at a scan rate of 0.02 V s-1 and long cycling stability with low capacitance loss after 5000 cycles as well as low leakage current and self-discharge. At a power density of 400 W/kg, TCP50 electrode exhibits superior energy density of 33.57 Wh/kg.



中文翻译:

涂有聚苯胺纳米纤维的无模板石墨氮化碳纳米片作为超级电容器应用的电极材料

使用一种生态友好且简便的原位聚合方法来开发具有优化的PANI纳米纤维的模板游离酸蚀刻石墨氮化碳(TGCN)纳米片。在TGCN纳米片上生长的PANI纳米纤维具有大的表面积,高孔隙率和独特的电荷转移特性。TGCN纳米片材在整个电化学测量过程中的快速团聚降低了比电容,这是由于其保质期缩短,而这种寿命可以通过掺入合适的聚合物(PANI)作为间隔物来克服。本文中,我们报告了使用X射线衍射(XRD),场发射扫描电子显微镜(FESEM),透射电子显微镜对TGCN / PANI纳米复合材料作为形貌,组成,表面积和孔径的函数进行比较的电化学性能(TEM),2.吸附-解吸。在这里,我们制备了TGCN / PANI纳米复合材料,它们也经过优化,可以用作高性能超级电容器应用中的高效电极纳米复合材料。优化的TGCN / PANI(TCP50)纳米复合材料在0.02 V s -1的扫描速率下显示出298.31 F / g的高比电容和长周期稳定性,在5000次循环后具有低电容损耗,以及低泄漏电流和自放电。在功率密度为400 W / kg时,TCP50电极的能量密度为33.57 Wh / kg。

更新日期:2021-03-15
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