Proton transport (PT) plays a vital role in many different fields, including biology, energy storage, catalysis, gas separation, and proton exchange membrane (PEM) hydrogen fuel cells. Fuel cells are of current interest because of their high energy conversion efficiency, high energy density, and their potential to aid in decarbonizing the transportation sector. Current PEM fuel cells most commonly employ Nafion, a sulfonated fluoropolymer, as the PEM material. While this material is widely used and well-characterized, there are still questions about the precise mechanism and limitations of PT in hydrated Nafion. Because of this, there have been many recent studies using molecular simulations aimed at elucidating the atomistic details of the PT mechanism in Nafion and related materials under hydrated conditions. A problem with Nafion is that it is not an intrinsic proton conduction material and must be hydrated. This limits the operating temperature to < 80 • C and requires complex and costly water management systems to maintain proper hydration without flooding. Developing membranes that can operate at elevated temperatures and at low humidity or under anhydrous conditions can enable increased kinetics, higher resistance to electrode ful to predict properties of materials that cannot be synthesized in practice. Several forms of hydroxylated graphene have been synthesized over the past several years. The ideal form of graphanol is fully functionalized graphane, with every H atom replaced by an OH group, whereas the materials produced experimentally have varying degrees of hydroxylation. We note that Pumera and coworkers have synthesized a material with a composition of (C 1 O 0.78 H 0.75 ) n , which is close to the ideal fully-functionalized graphanol composition. Importantly, the ideal material is not required to make a practical membrane. PT in graphanol occurs along a triangular lattice. Each node of this lattice is an O atom and the edges connecting these nodes are possible PT pathways. This triangular lattice has a percolation threshold of 0.5, meaning that graphane that is 50% functionalized with OH groups will conduct protons.