Optimizing Reduced Graphene Oxide Aerogel for a Supercapacitor

Reduce graphene oxide (rGO) aerogels with different precursor graphene oxide sheet sizes are synthesized using L-ascorbic acid reduction followed by an ambient pressure drying method. The sheet sizes determine the oxygen functionality content during aerogel formation, which subsequently affect its structural properties. The optimized sheet size renders strong parallel sheet stacking to provide mechanical strength that withstands capillary action during aerogel formation with a high surface area (190.40 m(2) g(-1)) and pore volume (0.261 cm(3) g(-1)). Such surface properties enhance the electrochemical properties of rGO aerogel (182 F g(-1) at 0.75 A g(-1)) and render it to be an excellent electrode material for a supercapacitor.

Automated summary

Reduced graphene oxide (rGO) aerogels with different precursor graphene oxide sheet sizes were synthesized using L-ascorbic acid reduction and ambient pressure drying method. The optimized sheet size resulted in strong parallel sheet stacking, providing mechanical strength and high surface area for enhanced electrochemical properties, making it an excellent electrode material for a supercapacitor.