Superconductor containing naturally-sourced activated carbon

A supercapacitor, comprising:

• a gel electrolyte;
• and
• two electrodes;
• wherein the electrodes comprise:
• a substrate;
• date stone activated carbon, wherein the date stone activated carbon is at least 50% graphitic;
• a conductive carbon compound different from the date stone activated carbon;
• and
• a binding compound,
• wherein a mixture of the date stone activated carbon, the conductive carbon compound, and the binding compound at least partially coats a surface of the substrate,
• wherein the two electrodes are assembled in a symmetrical layered configuration with the surfaces coated with the mixture facing each other,
• wherein the gel electrolyte is present between the surfaces coated with the mixture to form the supercapacitor,
• wherein the gel electrolyte is a mixture of H2SO4, polyvinyl alcohol, and anthraquinone,
• wherein particles of the date stone activated carbon have a nanosheet morphology having a stacked offset hierarchical structure with an offset length of 10-200 nm, and
• wherein the nanosheets are stacked on top of each other to form a hierarchical structure.