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Issue 47, 2018
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N-doping of graphene: toward long-term corrosion protection of Cu

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Despite the extraordinary impermeability of graphene, graphene fails to prevent the oxidation of Cu substrates under long-term air exposure owing to their high conductivity. Previous investigations showed that N-doped graphene could modulate the electrical properties of graphene while there has been no experimental example to investigate the protective performance of N-doped graphene to date. Here we demonstrate the synthesis and characterization of N-doped graphene with large-area atomic layers, and then evaluate its protective properties by both short- (electrochemical tests) and long-term (air exposure) corrosion tests. The results show that both short- and long-term corrosion are inhibited because incorporating nitrogen in graphene can decrease the conductivity of graphene and thus prevent the electron transport between Cu/N-doped graphene interfaces. Our finding provides a new protection method of graphene and will promote the basic research and applications of graphene.

Graphical abstract: N-doping of graphene: toward long-term corrosion protection of Cu

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The article was received on 07 Jun 2018, accepted on 24 Aug 2018 and first published on 24 Aug 2018

Article type: Paper
DOI: 10.1039/C8TA05421E
Citation: J. Mater. Chem. A, 2018,6, 24136-24148

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    N-doping of graphene: toward long-term corrosion protection of Cu

    S. Ren, M. Cui, W. Li, J. Pu, Q. Xue and L. Wang, J. Mater. Chem. A, 2018, 6, 24136
    DOI: 10.1039/C8TA05421E

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