“…S3†), there are two obvious characteristic peaks of binding energies 529.80 eV and 531.6 eV. 43,44 Through comparison with the results reported in the literature, it was found that the peak of binding energy at 529.80 eV corresponds to the lattice oxygen in the material, the oxygen that forms MnCo 2 O 4 with Mn and Co. By comparison with the standard C 1s peak (284.6 eV), it can be seen that two characteristic peaks of Co 2p 3/2 and Co 2p 1/2 were observed at 781.8 eV and 797.0 eV. 45 By fitting these two peaks, it was found that the peaks of Co 2p 3/2 and Co 2p 1/2 could be further fitted into two peaks, respectively (Fig.…”