Enhanced zinc ions storage performance of Mn2O3/Mn3O4/NiMn2O4 composite cathode material synthesized by a thermal decomposition method

Abstract

Constructing multi-phase composite (heterostructure) materials has proved to be an effective method to improve the electrochemical performance of electrode materials. Herein, a novel ternary Mn2O3/Mn3O4/NiMn2O4 composite is synthesized by a facile thermal decomposition method. Benefiting from the synergistic effect and rich oxygen defects, this composite shows high specific capacity of 646 mA h g−1 at 0.2 A/g and maintains a specific capacity of 185 mA h g−1 after 1000 cycles at 1.0 A/g, much better than that of binary Mn2O3/Mn3O4. This work reports a promising cathode material for aqueous zinc-ion batteries.