title: Phosphorus-doped graphitic carbon nitrides grown in situ on carbon-fiber paper: flexible and reversible oxygen electrodes.
abstract: Flexible non-metal oxygen electrodes fabricated from phosphorus-doped graphitic carbon nitride nano-flowers directly grown on carbon-fiber paper exhibit high activity and stability in reversibly catalyzing oxygen reduction and evolution reactions, which is a result of N, P dual action, enhanced mass/charge transfer, and high active surface area. The performance is comparable to that of the state-of-the-art transition-metal, noble-metal, and non-metal catalysts. Remarkably, the flexible nature of these oxygen electrodes allows their use in folded and rolled-up forms, and directly as cathodes in Zn-air batteries, featuring low charge/discharge overpotential and long lifetime.
authors.affiliation: School of Chemical Engineering, The University of Adelaide, Adelaide, SA 5005 (Australia).
authors.forename: Tian Yi
authors.initials: TY
authors.lastname: Ma
authors.forename: Jingrun
authors.initials: J
authors.lastname: Ran
authors.forename: Sheng
authors.initials: S
authors.lastname: Dai
authors.forename: Mietek
authors.initials: M
authors.lastname: Jaroniec
authors.forename: Shi Zhang
authors.initials: SZ
authors.lastname: Qiao
keywords: graphitic carbon nitride; nanostructure; oxygen evolution; oxygen reduction; phosphorus doping