[16a-B6-1~7] 17.2 Graphene

[16a-B6-1] Characterization of Proton Permeability of Monolayer Graphene on Au(111)

〇Satoshi Yasuda¹, Koji Nakashima¹, Takahiro Morimoto², Hideo Nakashima², Toshiya Okazaki², Kazuhisa Tamura³, Masaru Kato⁴, Shun Tanno⁴, Ichizo Yagi⁴, Kei Murakoshi¹ (1.DC, Hokkaido Univ., 2.AIST, 3.JAEA, 4.GSES, Hokkaido Univ.)

Keywords:graphene, Raman spectroscopy, proton

Proton permeability of monolayer graphene grown on Au(111) electrode was evaluated using electrochemical Raman spectroscopy. Monolayer graphene with high crystalline structure was synthesized on Au(111) single crystal by atmospheric CVD. Raman spectroscopy was found that when potential which hydrogen evolution reaction (HER) does not occur, was applied, compressive strain in monolayer graphene was released originating from generation of hydrogen at the graphene-Au(111) interace. The results strongly indicate that protons can penetrate underlying Au surface thorough graphene.