F-doped NiCo₂O₄@CoMoO₄ as an advanced electrode for aqueous Zn-ion batteries

Heterostructure engineering and element doping is a trustworthy route to attain outstanding aqueous Zn-ion battery electrode materials. Herein, we develop a new type of F-doped NiCo₂O₄@CoMoO₄ hierarchical nanostructure with abundant oxygen vacancies for aqueous Zn-ion batteries. The NiCo₂O₄@F-CoMoO₄ electrodes exhibit an excellent specific capacity of 402 mA h g^-1 at 1 A g^-1. The assembled NiCo₂O₄@F-CoMoO₄//Zn battery has an excellent specific capacity of 328 mA h g^-1 at 2 A g^-1, and a high energy density of 544.6 W h kg^-1 at a power density of 0.923 kW kg^-1.