10.1016/j.elecom.2015.07.001
Intrinsic electrochemical performance and precise control of surface porosity of graphene-modified electrodes using the drop-casting technique

Graphite and other chemicals were obtained from Sigma-Aldrich and are of reagent grade or higher. In the production of graphene, the first step was the oxidation of graphite to graphite oxide using the modified-Hummers method as reported in the literature [24] and [25]. The graphite oxide was subsequently thermally exfoliated at 1000 degC to give reduced graphene based on our previous method [26]. Graphene dispersions were prepared in DMF at concentrations ranging from 1.0 mg mL- 1 to 7.0 mg mL- 1, by ultrasonication for an initial 10 mins followed by 5 mins before each subsequent drop-casting event.
graphite oxide
thermally exfoliated
1000 degC
degC
Graphene dispersions
concentrations
1.0 mg mL- 1 to 7.0 mg mL- 1
mg mL- 1
Graphene dispersions
ultrasonication
10 mins followed by 5 mins
mins