PbS nanoparticles anchored 1D- CdSe nanowires: Core-shell design towards energy storage supercapacitor application

•CdSe@PbS core-shell 1D nanonetwork synthesized by using three steps chemical routes.•CdSe@PbS core-shell electrode depicts maximum capacity of 82 mAh g-1.•Fabrication of CdSe@PbS based symmetric supercapacitor cell which exhibits high capacity of 32 mAh g-1.•Cell displays significant energy density 16.14 Wh kg-1 and long-term stability.