Electrochemical energy storage application of CuO/ CuO@Ni-CoMoO4.0.75H2O nanobelt arrays grown directly on Cu foam

Supercapacitors are attracting huge research interest because they are expected to achieve battery-level energy density, and they have a longer calendar life and shorter charging time. However, due to the out shell materials without contact extra freeway for charge transports, the out shell materials have still limited contribution to high capacitance for array structure at high rates. Here, CO/CO@Ni-CMO NBs were designed and synthesized on Cu foam substrates with CuO NBs as cores or extra freeway and Ni-CoMoO4.0.75H(2)O nanobelt as shell by an easily synthetic method. CuO NBs will provide electron superhighways and extra outside freeway for charge storage and delivery. Besides, the Ni doped CoMoO4.0.75H(2)O NBs are conducive to the electrical conductivity, and open space among these nanosheets can act as an ion reservoir , the increment of active sites and the contribution of capacitive effects. Finally, the CO@Ni-CMO NBs directly grown on Cu foam could avoid the dead volume caused by the tedious process of mixing active materials with polymer binders/conductive additives. As expected, the CO/CO@Ni-CMO NBs exhibited the high specific capacitance, the good rate performance and the excellent electrochemical stability.

Automated summary

This research focuses on the design and synthesis of CO/CO@Ni-CMO NBs with high specific capacitance and excellent electrochemical performance.