A Nix:Vy–Se nanoparticle decorated hierarchical porous Zn–Co–P nanowire array electrode for high energy density asymmetric supercapacitors

Using a novel bi-metallic Ni x :V y –Se/Zn–Co–P heterogeneous electrode as a high-performance positive electrode, a high energy density asymmetric solid-state supercapacitor device is fabricated.