@misc{10481/65562,
year = {2020},
month = {10},
url = {http://hdl.handle.net/10481/65562},
abstract = {Introducing new inexpensive materials for supercapacitors application with high energy density and stability, is the current research challenge. In this work, Silver doped carbon xerogels have been synthesized via a simple sol-gel method. The silver doped carbon xerogels are further surface functionalized with di erent loadings of nickel cobaltite (1 wt.%, 5 wt.%, and 10 wt.%) using a facile impregnation process. The morphology and textural properties of the obtained composites are characterized by X-ray di raction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and nitrogen physisorption analysis. The silver doped carbon xerogels display a higher surface area and larger mesopore volume compared to the un-doped carbon xerogels and hierarchically porous structure is obtained for all materials. The hybrid composites have been utilized as electrode materials for symmetric supercapacitors in 6 M KOH electrolyte. Among all the hybrid composites, silver doped carbon xerogel functionalized with 1 wt.% nickel cobaltite (NiCo1/Ag-CX) shows the best supercapacitor performance: high specific capacitance (368 F g(-1) at 0.1 A g(-1)), low equivalent series resistance (1.9 W), high rate capability (99% capacitance retention after 2000 cycles at 1 A g(-1)), and high energy and power densities (50 Wh/Kg, 200 W/Kg at 0.1 A g(-1)). It is found that the specific capacitance does not only depend on surface area, but also on others factors such as particle size, uniform particle distribution, micro-mesoporous structure, which contribute to abundant active sites and fast charge, and ion transfer rates between the electrolyte and the active sites.},
organization = {Deanship of Scientific Research at King Khalid University 	
R.G.P.2/39/40},
publisher = {Mdpi},
keywords = {Supercapacitors},
keywords = {Carbon xerogels},
keywords = {Silver nanoparticles},
keywords = {Nickel cobaltite},
keywords = {Hybrid electrode materials},
keywords = {Porous structure},
title = {Nickel Cobaltite Functionalized Silver Doped Carbon Xerogels as E cient Electrode Materials for High Performance Symmetric Supercapacitor},
doi = {10.3390/ma13214906},
author = {Wasfey, Madlin A. and Carrasco Marín, Francisco and Pérez Cadenas, Agustín Francisco},
}