Carbon Electrode Material for Improving the Performance of Supercapacitors and Method of Making Carbon Electrode Material

A supercapacitor comprising:

• a first electrode, a second electrode, a porous separator positioned between the first and second electrodes, and an electrolyte in electronic and physical contact with the first and second electrodes and the porous separator, wherein at least one of the first and second electrodes comprise a carbon electrode material (CEM), the CEM comprising:
• a hierarchical, interconnected, 3D network of thin, crumpled, graphene sheets, wherein the graphene sheets comprise irregularly shaped, micro-, meso- and macro-scale pore structures, wherein the CEM comprises a BET SSA between approximately 1400 m2 g−1 and approximately 2200 m2 g−1, and wherein the CEM comprises a Raman ID/IG intensity ratio between approximately 0.05 to approximately 1.2.