Electrochemical Lithium Insertion/Extraction in Partially Reduced α-MoO3
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A. M. Hashem
Abstract
This work concerns with synthesis, structural, thermal and electrochemical characterization of molybdenum oxides (stoichiometric MoO3, sub-stoichiometric oxide MoO3−x (where x is a small fraction) with layered type structure. XRD investigations of the samples proved that the crystal structure of the layered α-MoO3) 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 LiClO4/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−1, whereas the non-reduced MoO3 has retained only about 45 mAh g−1 after 20 cycles. This significant improvement of the rechargeability may be related to improvement in the electronic conductivity after reduction process.
© 2004 Oldenbourg Wissenschaftsverlag GmbH
Artikel in diesem Heft
- Homogeneous Ice Nucleation in Water and Aqueous Solutions
- Electrochemical Lithium Insertion/Extraction in Partially Reduced α-MoO3
- Voltammetric Behaviour of Pentoxifylline at Mercury Electrode
- Spectrophotometric Studies of Reactions of the Aquapentacyanoferrate(II) Ion with Ketones. Kinetics and Mechanism of the Substitution Reaction of the Aquapentacyanoferrate(II) Ion with 1-Benzoylethylpyridinium Chloride
- Effect of Electrolytes on the Aggregation of Sodium Dodecyl Sulphate: the Interactions of Different Counterions with Formed Micelles
- Reversible Gas Adsorption in Coated Wall Flow Tube Reactors. Model Simulations for Langmuir Kinetics
- Polyanionic Selenium Fragments and Vibrations in NaMSeN Clusters
- Book Review
Artikel in diesem Heft
- Homogeneous Ice Nucleation in Water and Aqueous Solutions
- Electrochemical Lithium Insertion/Extraction in Partially Reduced α-MoO3
- Voltammetric Behaviour of Pentoxifylline at Mercury Electrode
- Spectrophotometric Studies of Reactions of the Aquapentacyanoferrate(II) Ion with Ketones. Kinetics and Mechanism of the Substitution Reaction of the Aquapentacyanoferrate(II) Ion with 1-Benzoylethylpyridinium Chloride
- Effect of Electrolytes on the Aggregation of Sodium Dodecyl Sulphate: the Interactions of Different Counterions with Formed Micelles
- Reversible Gas Adsorption in Coated Wall Flow Tube Reactors. Model Simulations for Langmuir Kinetics
- Polyanionic Selenium Fragments and Vibrations in NaMSeN Clusters
- Book Review
