An ultra-high-performance anode material for supercapacitors: self-assembled long Co3O4 hollow tube network with multiple heteroatom (C-, N- and S-) doping

A novel self-assembled long Co3O4 hollow tube network with multiple heteroatom (C-, N- and S-) doping was prepared for the first time by the combination of hydrothermal and calcination techniques using the eggshell membrane as the template and dopant.