The pursuit of innovative and adaptable electrode materials with exceptional electrochemical performance is crucial for the improvement of sophisticated energy storage devices. Herein, we report a novel design of unique manganese molybdate@nickel molybdate (MnMoO4@NiMoO4) nanorods-on-nanosheets core–shell structures grown on nickel foam as a binder-free electrode for asymmetric supercapacitor. The distinct core–shell design offers an efficient mesoporous network, ion diffusion channels a rapid electron transfer pathway, and accommodates more active sites for MnMoO4 and NiMoO4. The assembled asymmetric supercapacitors device exhibits an understanding of energy density (29.27 Wh kg−1), power density (961.26 W kg−1) and, notable cycling stability with ∼89.85 % retaining over 10,000 charge/discharge cycles.

Through investigating the effects of the charge-carrier recombination rates and acid/base behavior on CO2PR efficiency and product selectivity, we revealed that the influence on the CO2PR reaction follows the order of Lewis acid sites > Lewis base sites > charge-carrier recombination rates. Our proposed mechanism suggests that the Lewis acid sites regulate H+ production and control the CO and CH4 production rates and selectivity. In addition, we demonstrate irradiation-induced Lewis acid/base behavior of the photocatalyst by NH3-/CO2-temperature programmed desorption. Accordingly, our engineered photocatalyst comprising 1% synchronous Ag-doped mesoporous TiO2 calcinated at 470 °C (S-Ag1.0TC470) exhibited 96% CH4 selectivity and an 11-fold higher production yield than that of commercial P25.

will soon be updated ...

will soon be updated ...