Abstract
Molybdenum oxide, MoO 3, is a promising cathode material for high energy density lithium batteries. We report measurement of transport properties of lithium-intercalated MoO 3 using electrical resistivity, Hall effect, electrochemical titration and far-infrared spectroscopy. Both electronic and ionic conductivities are measured for reversible lithium intercalation of MoO 3. Electronic conductivity is characteristic of a metal. The ionic conductivity increases with Li concentration to 1.5 × 10 −4 S cm −1 in Li 0.7MoO 3. Li + diffusivity in Li x MoO 3 is high, reaching a maximum of 10 −9 cm 2s −1. The charge transfer mechanism is discussed.
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