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MoO3–x Nanowire Arrays As Stable and High-Capacity Anodes for Lithium Ion Batteries

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journal contribution
posted on 11.04.2012, 00:00 by Praveen Meduri, Ezra Clark, Jeong H. Kim, Ethirajulu Dayalan, Gamini U. Sumanasekera, Mahendra K. Sunkara
In this study, vertical nanowire arrays of MoO3–x grown on metallic substrates with diameters of ∼90 nm show high-capacity retention of ∼630 mAhg–1 for up to 20 cycles at 50 mAg–1 current density. Particularly, they exhibit a capacity retention of ∼500 mAhg–1 in the voltage window of 0.7–0.1 V, much higher than the theoretical capacity of graphite. In addition, 10 nm Si-coated MoO3–x nanowire arrays have shown a capacity retention of ∼780 mAhg–1, indicating that hybrid materials are the next generation materials for lithium ion batteries.