3D printed graphene aerogel made better super capacitor electrode

According to foreign media reports, researchers are using 3D printing to develop electrodes with the highest charge storage per unit surface area for supercapacitors. A study by the University of California Santa Cruz and the US Department of Energy's Lawrence Livermore National Laboratory, 3D printed graphene aerogel Thus, a porous three-dimensional scaffold has been developed in which manganese oxide is loaded to produce a better supercapacitor electrode.

Supercapacitors can be used as energy storage devices because they charge very quickly in a matter of seconds or minutes, and can maintain storage capacity even after tens of thousands of charge cycles, which can be used in regenerative braking systems for electric vehicles. Many applications. However, while technological advances have made them more competitive in other applications, supercapacitors have not been applied to batteries because they retain less energy in the same space and cannot be charged as long as batteries.

Researchers have previously shown that the electrodes of ultra-fast charging supercapacitors can be made using 3D printed graphene aerogels. In the new study, researchers have improved graphene aerogels to create porous scaffolds and then mount them for oxidation. manganese. A supercapacitor device made of a graphene/manganese oxide electrode showed good cycle stability, and maintained an initial capacitance of 90% after 20,000 charge and discharge cycles.