Figure 1

Electrochemical performance of Fe2(MoO4)3 in lithium and sodium cells.
Galvanostatic discharge/charge curves of Fe2(MoO4)3 electrode under a current density of C/20 in (a) Li and (b) Na cells. Cyclic voltammogram curves of Fe2(MoO4)3 electrode in the initial three cycles at the scan rate of 0.01 mVs−1 in (c) lithium and (d) sodium cells.