کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6472704 | 1424135 | 2016 | 13 صفحه PDF | دانلود رایگان |
A facile and readily scalable approach to prepare O/N co-doped 3D nanostructured foam-like porous carbon composed of interconnected carbon nanosheets (NFPCs) has been successfully explored. The NFPCs are synthesized from normal reagents including melamine resin, coal tar pitch, magnesium acetate and KOH, and firstly found that the KOH exerts a vital role in constructing the 3D foam-like nanostructure. The 3D foam-like porous carbon possesses continuous macropores, high surface area, interconnected 8Â nm thick carbon nanosheets, especially, a good deal of nanosized fissures in carbon nanosheets and high content of oxygen/nitrogen heteroatoms, which endow NFPCs with superior capacitive performance. The NFPC0.4-0.4Y-700 exhibits a high specific capacitance of 302Â FÂ gâ1 at 5Â AÂ gâ1 and high rate capability (92% retention from 5 to 50Â AÂ gâ1) in 6Â M KOH. The NFPC0.4-0.4Y-700 symmetrical supercapacitor has presented a high energy density of 21 Wh kgâ1 at 865Â WÂ kgâ1 in 1Â M Na2SO4 electrolyte. The simple, cost-effective and scalable synthesis strategy to produce advanced nanostructured carbon materials from industrialized reagent provides a new protocol for fabricating excellent performance supercapacitors.
Journal: Electrochimica Acta - Volume 222, 20 December 2016, Pages 793-805