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In the context of graphene-based composite applications, a completeunderstanding of charge conduction in multilayer reduced graphene oxides (rGO)is highly desirable. However, these rGO compounds are characterized by multipleand different sources of disorder depending on the chemical method used fortheir synthesis. Most importantly the precise role of interlayer interaction inpromoting or jeopardizing electronic flow remains unclear. Here, thanks to thedevelopment of a multiscale computational approach combining first-principlescalculations with large scale transport simulations, the transport scaling lawsin multilayer rGO are unraveled, explaining why diffusion worsens withincreasing film thickness. In contrast, contacted films are found to exhibit anopposite trend when the mean free path becomes shorter than the channel length,since conduction becomes predominantly driven by interlayer hopping. Thesepredictions are favourably compared with experimental data and open a roadtowards the optimization of graphene-based composites with improved electricalconduction.

Towards Optimized Charge Transport in Multilayer Reduced Graphene Oxides