Journal
BULLETIN OF MATERIALS SCIENCE
Volume 42, Issue 6, Pages -Publisher
INDIAN ACAD SCIENCES
DOI: 10.1007/s12034-019-1952-8
Keywords
Supercapacitor; quantum capacitance; density functional theory
Categories
Funding
- DST-SERB [SB/FTP/PS-032/2014]
Ask authors/readers for more resources
In this paper, we specify a powerful way to boost quantum capacitance of graphene-based electrode materials by density functional theory calculations. We performed functionalization of graphene to manifest high-quantum capacitance. A marked quantum capacitance of above 420 mu Fcm-2 has been observed. Our calculations show that quantum capacitance of graphene enhances with nitrogen concentration. We have also scrutinized effect on the increase of graphene quantum capacitance due to the variation of doping concentration, configuration change as well as co-doping with nitrogen and oxygen ad-atoms in pristine graphene sheets. A significant increase in quantum capacitance was theoretically detected in functionalized graphene, mainly because of the generation of new electronic states near the Dirac point and the shift of Fermi level caused by ad-atom adsorption.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available