Reduced graphene oxide (rGO) and highly reduced chemically converted graphene (ICCO) samples were prepared under different processing condition! and were doped into MgBz by a diffusion process at 800 °C for 10 houn. It was demonstrated that a small addition rCCG can significantly improve the supcn;onducting properties of MgBz. Doping of M8B2 with 1 mol% of rCCG resulted in a Ie of 5.45 X lOS A cm-2 at 20 K in self-fields, which il nearly 32% improvement over that of the undopcd sample. This is a significant improvement as most carbon sources adversely affect the Ie performance: at the zero field.
De Silva, K. S. B., Gambhir, S., Wang, X. L., Xu, X., Li, W. X., Officer, D. L., Wexler, D., Wallace, G. G. & Dou, S. X. (2012). The effect of reduced graphene oxide addition on the superconductivity of MgB2. Journal of Materials Chemistry, 22 (28), 13941-13946.