[17p-C202-1~15] 17.2 Graphene

[17p-C202-5] Investigation of reduction process of graphene oxide by in-situ electrical conductivity measurement Ⅲ

〇Takuya Shinohara¹, Seiji Obata¹, Koichiro Saiki¹ (1.Grad. Sch. Frontier Sci., The Univ. of Tokyo.)

Keywords:graphene, graphene oxide, reduction

We reported that restoration of GO occurs at 580 ℃ using a hot W filament and restoration speed depends on temperature of the hot filament. Here, we measured in-situ conductivity change of GO at various substrate temperatures to elucidate the restoration mechanism and to achieve the synthesis at lower temperature. As a result, we found that GO was restored even at 480 ℃. Furthermore, we calculated the activation energy of the reaction between GO and active species from methane was about 0.93 eV that is much lower than that in chemical vapor deposition on Cu.