Highly Stable Supercapacitor Devices Based on Three-Dimensional Bioderived Carbon Encapsulated g-C3N4Nanosheets
Author's Department
Energy Materials Laboratory
Second Author's Department
Energy Materials Laboratory
Fourth Author's Department
Physics Department
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https://doi.org/10.1021/acsaem.1c02280
Document Type
Research Article
Publication Title
ACS Applied Energy Materials
Publication Date
9-27-2021
doi
10.1021/acsaem.1c02280
Abstract
Owing to the increasing demand for sustainable and eco-friendly energy storage devices such as supercapacitors, it is vital to continuously search for highly stable and cost-effective electrode materials with high energy and power densities. Herein, a 3D/2D metal-free mesoporous composite of graphitic carbon nitride (GCN) and bioderived carbon (Bio-Cx) is investigated as an energy storage electrode material. This composite overcomes the low conductivity and low capacitance limitations of GCN while enjoying its high corrosion resistance, high nitrogen content, and unique 2D structure. The GCN/Bio-Cx composite exhibits a fairly wide operating potential window of 1.2 V in 0.5 M H2SO4 aqueous electrolyte with a high capacitance of 300 F/g at 1 A/g. This high performance was ascribed to the huge number of available active sites, large surface area, and the unique 3D/2D structure. The assembled device employing the GCN/Bio-Cx composite as the positive electrode and mesoporous nitrogen-doped carbon (MPNDC) as the negative electrode showed an ultrahigh-energy density of 53.72 Wh/kg and a power density of 900 W/kg. The GCN/Bio-Cx//MPNDC device retains ∼100% of its initial capacitance after 13 000 charge/discharge cycles with 100% Columbic efficiency.
First Page
10344
Last Page
10355
Recommended Citation
APA Citation
Taha, M.
Ghanem, L.
Hamza, M.
&
Allam, N.
(2021). Highly Stable Supercapacitor Devices Based on Three-Dimensional Bioderived Carbon Encapsulated g-C3N4Nanosheets. ACS Applied Energy Materials, 4(9), 10344–10355.
10.1021/acsaem.1c02280
https://fount.aucegypt.edu/faculty_journal_articles/2793
MLA Citation
Taha, Manar M., et al.
"Highly Stable Supercapacitor Devices Based on Three-Dimensional Bioderived Carbon Encapsulated g-C3N4Nanosheets." ACS Applied Energy Materials, vol. 4,no. 9, 2021, pp. 10344–10355.
https://fount.aucegypt.edu/faculty_journal_articles/2793