Fig. 1. XRD patterns of Zn_1/3Mn_2/3CO₃， ZnMn₂O₄ and ZnMn₂O₄/rGO

Fig. 2. TG curves of Zn_1/3Mn_2/3CO₃ and ZnMn₂O₄/rGO

Fig. 3. SEM images of Zn_1/3Mn_2/3CO₃， ZnMn₂O₄ and ZnMn₂O₄/rGO

Fig. 4. TEM images （a）~（c） and elemental mapping （d） of ZnMn₂O₄/rGO

Fig. 5. N₂ adsorption-desorption isotherms with pore size distribution （inset） of ZnMn₂O₄/rGO

Fig. 6. XPS of ZnMn₂O₄/rGO

Fig. 7. Raman spectrum of ZnMn₂O₄/rGO

Fig. 8. Lithium storage property tests of materials

Fig. 9. SEM images of the ZnMn₂O₄/rGO electrode before cycling and after 700 cycles

Fig. 10. Kinetic analysis of the electrochemical behavior of ZnMn₂O₄/rGO electrode