Electrolytic molybdenum sulfides for thin-layer lithium power sources

The active molybdenum sulfide compound Mo 2 S 3 , which should be considered as a cathode material for thin-layer rechargeable power source, has been produced by electrolysis. Using impedance spectroscopy and potential relaxation method after current interruption, the kinetic parameters of lithium i...

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Bibliographic Details
Published in:Journal of solid state electrochemistry 2008-09, Vol.12 (9), p.1151-1157
Main Authors: Shembel, E., Apostolova, R., Kirsanova, I., Tysyachny, V.
Format: Article
Language:English
Subjects:
Analytical Chemistry
Characterization and Evaluation of Materials
Chemistry
Chemistry and Materials Science
Condensed Matter Physics
Electrochemistry
Energy Storage
Original Paper
Physical Chemistry
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Summary:The active molybdenum sulfide compound Mo 2 S 3 , which should be considered as a cathode material for thin-layer rechargeable power source, has been produced by electrolysis. Using impedance spectroscopy and potential relaxation method after current interruption, the kinetic parameters of lithium intercalation in electrolytic Mo 2 S 3 have been obtained. Activation energy of Li + migration in electrolyte (13.76 kJ/mol), charge transfer through the Mo 2 S 3 electrode/electrolyte interface (38.8 kJ/mol), and Li + diffusion in a solid phase (57.3 kJ/mol) have also been established. Taking into account the coefficient data of charge mass transfer in a solid phase and the reaction rate coefficient of charge transfer through the interface electrode/electrolyte within the temperature range 20–50 °C, the stage of Li + transfer in a solid phase has been determined as a limiting stage for lithium intercalation in electrolytic molybdenum sulfide Mo 2 S 3 .
ISSN:1432-8488
1433-0768
DOI:10.1007/s10008-007-0463-5