Simultaneous electrochemical synthesis of few-layer graphene flakes on both electrodes in protic ionic liquids

Here we illustrate a simple and moderate electrochemical strategy to simultaneously harvest high-quality few-layer graphene flakes (<5 layers) from both a graphite anode and a graphite cathode in the protic ionic liquids. Specifically, the graphene flakes detached from cathodic graphite receive a defect healing.