Supercapacitor electrode breaks records

3D-printed supercapacitor electrode breaks records in lab tests

Supercapacitor devices made with the graphene aerogel/manganese oxide electrodes showed good cycling stability, retaining more than 90 percent of initial capacitance after 20,000 cycles of charging and discharging.

1.56 mWh cm⁻²

Here, we demonstrate a 3D printed graphene aerogel electrode with MnO2 loading of 182.2 mg cm⁻², which achieves a record-high areal capacitance of 44.13 F cm⁻².