Turning CO2 to graphene superconductors
A new process not only turns CO2 into 3D graphene but instils a microporous surface that makes it an efficient supercapacitor.
The creation of 3D microporous graphene from CO2 would usually require several steps. Conversion of CO2 into useful materials typically requires high energy input. However, the Michigan Technological University (MTU), USA, has created what it refers to as ‘a brand new material’ with a simple step – just add sodium.
The graphene surface, which the MTU team described as cabbage-like, is pockmarked with micropores and folds into larger mesopores, increasing the surface area for adsorption of electrolyte ions that ‘would make an excellent electrode material for energy storage devices,’ said Yun Hang Hu, MTU Professor of Materials Science.
Although turning CO2 into useful materials usually requires high energy input, due to its ultrahigh stability, Hu said the addition of sodium and raising the temperature to 520°C instigates a heat-releasing reaction instead of the required energy output.
You can read the paper, An ideal electrode material, 3D surface-microporous graphene for supercapacitors with ultrahigh areal capacitence, at bit.ly/2vBfyCi