Transition metal hydroxides@conducting MOFs on carbon nanotube yarns for ultra-stable quasi-solid-state supercapacitors with a ship-in-a-bottle architecture

A ship-in-a-bottle architecture on carbon nanotube yarn-based supercapacitor is prepared, in which transition metal hydroxide nanoparticles are confined in metal–organic frameworks anchored on carbon nanotubes and exhibits ultrahigh structural and electrochemical stability.