Abstract
Molybdenum oxyfluoride MoO2.8F0.2 has been synthesized by solid-phase method. Its morphological and structural features were studied by scanning electron microscopy and X-ray powder diffraction. It was established that the substitution of the O atoms for F atoms in MoO3 structure leads to charge redistribution in the crystal lattice and conductivity increasing from 4.4·10−9Scm−1 to 1.8·10−6Scm−1. It was shown that molybdenum oxyfluoride characterized by higher discharge–charge stability in comparison with the oxide itself: 10-fold cycling in the range from 3.5 to 1.5V yields 160mAhg−1 and 120mAhg−1 for MoO2.8F0.2 and MoO3, respectively.
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