Manganese vanadium oxide composite as a cathode for high-performance aqueous zinc-ion batteries

The development of clean renewable energy and energy storage devices is of great significance under the present energy crisis and environmental pollution background. Aqueous zinc-ion battery (ZIB) has become one of the most promising energy storage devices due to its high capacity, safety and low cost. However, the application of ZIB cathode is usually limited by low capacity and poor stability. Herein, we propose a novel heterostructure MnO/MnV2 O4 composite material composed of MOF derivatives and spinel with dual active components as cathode for ZIBs. Benefited from substantial framework of MOF derivatives and the synergistic effect of heterostructures, MnO/MnV2 O4 exhibits excellent rate performance (342 mAh/g at 0.1 A/g, 261 mAh/g at 15 A/g) and cycling performance (198.9 mAh/g at 10 A/g after 20 0 0 cycles) in 3 mol/L Zn(CF3 SO3 )2 electrolytes. This work extends the range of developing high-performance cathodes for ZIBs under high current density and is expected to enlighten the optimization of commercial energy storage devices. (c) 2024 Published by Elsevier B.V. on behalf of Chinese Chemical Society and Institute of Materia Medica, Chinese Academy of Medical Sciences.