Near-Stoichiometric Bulk Graphane from Halogenated Graphenes (X = Cl/Br/I) by the Birch Reduction for High Density Energy Storage Alex Yong Sheng Eng, Zdeněk Sofer, Daniel Bouša, David Sedmidubský, Stepan Huber, Martin Pumera* Advanced Functional Materials 2017, 27(13)