A high performance asymmetric supercapacitor based onin situprepared CuCo2O4nanowires and PPy nanoparticles on a two-ply carbon nanotube yarn

A two-ply CNT yarn asymmetric supercapacitor was fabricated by assembling a CuCo₂O₄nanowire positive electrode and a PPy nanoparticle negative electrode. The full cell exhibits a high specific capacitance of 59.55 mF cm⁻²and a high energy density of 0.02 mW h cm⁻².