Ordered mesoporous MoO2 as a high-performance anode material for aqueous supercapacitors

Ordered mesoporous MoO2 is prepared employing silica KIT-6 as hard template. Electrochemical quartz crystal microbalance is utilized to investigate the charge storage mechanism of mesoporous MoO2 in aqueous LiOH electrolyte solution. The dominating working ions are proved to be Li+ ions. Mesoporous MoO2 exhibits excellent supercapacitive behavior in the potential range of −1.2 to −0.5 V vs. SCE, rendering it a promising anode material for aqueous supercapacitors.

► Ordered mesoporous MoO2 was prepared using silica KIT-6 as hard template.
► MoO2 exhibits excellent performance as anode material for aqueous supercapacitors.
► The dominating working ions of MoO2 in LiOH electrolyte are proved to be Li+ ions.