Electrochemical Lithium Insertion/Extraction in Partially Reduced α-MoO3

• Published in: Zeitschrift für physikalische Chemie (Neue Folge) Vol. 218; no. 11; pp. 1259 - 1272
• Main Authors: Hashem, A. M., Abbas, H., Abdel-Ghany, A. E.
• Format: Journal Article
• Language: English
• Published: De Gruyter Oldenbourg 01.11.2004
• ISSN: 0942-9352; 2196-7156
• DOI: 10.1524/zpch.218.11.1259.50809

This work concerns with synthesis, structural, thermal and electrochemical characterization of molybdenum oxides (stoichiometric MoO , sub-stoichiometric oxide MoO (where is a small fraction) with layered type structure. XRD investigations of the samples proved that the crystal structure of the layered α-MoO ) has been maintained after the reduction process. The reduced samples exhibited a drastically improved charge/discharge cycling stability and capacity retention on cycling in 1 M LiClO /propylene carbonate. At higher cycle numbers (approx. cycle 50) the discharge capacity of the reduced molybdenum oxides stabilizes at a level of approx. 50 mAh g , whereas the non-reduced MoO has retained only about 45 mAh g after 20 cycles. This significant improvement of the rechargeability may be related to improvement in the electronic conductivity after reduction process.