An electrochemical functionalization method is developed to fabricate N- and O-rich graphene films (F-RGO-60) with an expanded interlayer distance. In particular, the functionalization process could be completed within 60 seconds at room temperature, which is conducive to large-scale commercial applications. Electrochemical synthesis of F-RGO-60 leads to two synergetic effects simultaneously: (1) the expansion of the interlayer distance caused by a bubble effect, which leads to more exposure of the active surface area and (2) the introduction o...
