N-doping of graphene: toward long-term corrosion protection of Cu. Issue 47 (13th September 2018)

• Record Type: Journal Article
• Authors: Ren, Siming; Cui, Mingjun; Li, Wensheng; Pu, Jibin; Xue, Qunji; Wang, Liping
• Is Part Of: Journal of materials chemistry. Volume 6:Issue 47(2018)
• Page Start: 24136
• Page End: 24148
• Publication Date: 2018-09-13
• Subjects: Materials -- Research -- Periodicals; Chemistry, Analytic -- Periodicals; Environmental sciences -- Research -- Periodicals; 543.0284
• DOI: 10.1039/c8ta05421e
• Languages: English
• ISSNs: 2050-7488

Abstract

Abstract : N-doped graphene could be a promising candidate for long-term corrosion protection of Cu because of its low conductivity compared to pristine graphene. Abstract : 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.