| abstract |
Provided is a rope-shaped supercapacitor having a first and second conductive porous electrode in a rod shape, where the pores are filled with an electrolyte and an electrode active material. The pores of the first electrode may contain activated carbon or isolated graphene sheets. A porous separator encases the first electrode to form a separator-protected electrode. The two electrodes are combined to form a braid or twist yarn, and a protective sheath wrapps around or encases the braid or twist yarn. |