Researchers from Korea's Ulsan National Institute of Science and Technology (UNIST) developed a new way to synthesize CVD-grown 3D mesoporous graphene nanoballs (MGBs) for supercapacitor applications. The researchers say that these materials can be easily mass produced, while retaining graphene's properties.
The MGBs feature a large surface area and great conductivity. The researchers demonstrated that the capacity of supercapacitors can be improved significantly using these new materials, due to the unique mesoporous structure. This new material not only improves the capacity, but it also improves the properties of the supercapacitor (excellent capacitance even at a high current density) because the mesopores inside the graphene surfaces induce nanochannels to transport ions in electrolyte.