Journal
JOURNAL OF PHYSICAL CHEMISTRY C
Volume 119, Issue 47, Pages 26290-26295Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.jpcc.5b07943
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Because of their many advantages, graphene and graphene-based materials are used in supercapacitor electrodes. The main limitation of these electrodes is their low quantum capacitance, which is a direct result of the shortage of states near the Fermi level. Using first-principles density functional theory calculations, this report explored the quantum capacitances of Si-, S-, and P-doped graphenes and the same materials codoped with nitrogen. The findings imply that using phosphorus- and nitrogen-doped graphenes as electrode materials for supercapacitors could be a worthwhile strategy. Quantum capacitance calculations confirmed the greater advantage of some codoped graphenes compared with doped and pristine graphene.
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