General ion-exchanged method synthesized 3D heterostructured MCo2O4/Co3O4 nanocomposites (M= Mn, Fe, Ni, Cu and Zn)

3D heterostructured MCo2O4/Co3O4 nanocomposites (M = Mn, Fe, Ni, Cu, Zn) were synthesized successfully through a facile ion-exchange method. The unique hierarchical structure possess high specific surface area and ion transmission thoroughfare, which provide more attainable reaction sites, facilitate diffusion of reactants and products, and finally enhance the electrochemical property.154