title: Highly stable performance of supercapacitors from phosphorus-enriched carbons.
abstract: Phosphorus-rich microporous carbons (P-carbons) prepared by a simple H(3)PO(4) activation of three different carbon precursors exhibit enhanced supercapacitive performance in 1 M H(2)SO(4) when highly stable performance can be achieved at potentials larger than the theoretical decomposition potential of water. This ability of P-carbons greatly enhances the energy density of supercapacitors that are capable of delivering 16 Wh/kg compared to 5 Wh/kg for the commercial carbon. An intercept-free multiple linear regression model confirms the strongest influence of phosphorus on capacitance together with micropores 0.65-0.83 nm in width that are the most effective in forming the electric double layer.
authors.affiliation: The University of Queensland, ARC Centre of Excellence for Functional Nanomaterials, School of Engineering and Australian Institute for Bioengineering and Nanotechnology, 4072 Queensland, Australia. d.jurcakova@uq.edu.au
authors.forename: Denisa
authors.initials: D
authors.lastname: Hulicova-Jurcakova
authors.forename: Alexander M
authors.initials: AM
authors.lastname: Puziy
authors.forename: Olga I
authors.initials: OI
authors.lastname: Poddubnaya
authors.forename: Fabian
authors.initials: F
authors.lastname: Suárez-García
authors.forename: Juan M D
authors.initials: JM
authors.lastname: Tascón
authors.forename: Gao Qing
authors.initials: GQ
authors.lastname: Lu