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−1 and maintains a specific capacity of 185 mA h g−1 after 1000 cycles at 1.0 A g−1, much better than that of binary Mn2O3/Mn3O4. This work reports a promising cathode material for aqueous zinc-ion batteries.
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