Table 2 A comparison of the electrochemical effective area Aeff, calculated via the quasi-reversible Randles–Ševčík equation (see Methods section) and the geometrical surface area AGeo, (calculated from the physical contact area immersed within 1 mM hexaammineruthenium (III) chloride/0.1 M KCl) of the graphene/PLA and printed 3DE. The real area percentage, AReal, is also presented for additional comparison (see Methods section).

From: 3D Printed Graphene Based Energy Storage Devices

Electrode

AGeo/cm2

Aeff/cm2

AReal/%

Graphene/PLA

0.13

0.066

50.77

3DE

0.36

0.085

23.61