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Phosphorus‐Doped Graphitic Carbon Nitrides Grown In Situ on Carbon‐Fiber Paper: Flexible and Reversible Oxygen Electrodes
Author(s) -
Ma Tian Yi,
Ran Jingrun,
Dai Sheng,
Jaroniec Mietek,
Qiao Shi Zhang
Publication year - 2015
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201411125
Subject(s) - overpotential , materials science , oxygen , carbon fibers , electrode , nitride , cathode , graphitic carbon nitride , metal , chemical engineering , oxygen evolution , doping , inorganic chemistry , catalysis , nanotechnology , composite material , chemistry , optoelectronics , metallurgy , electrochemistry , layer (electronics) , organic chemistry , photocatalysis , composite number , engineering
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.