Graphite sulphate is used as a precursor to graphene for the first time. The positively charged graphene layers react with water to yield a processable graphene derivative. The unprecedented low density of defects is determined to be 0.06% on average and may open the way for electronic applications.
Eigler, S. (2015). Graphite sulphate - A precursor to graphene. Chemical Communications, 51(15), 3162–3165. https://doi.org/10.1039/c4cc09381j