Electrolytic molybdenum sulfides for thin-layer lithium power sources |
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Authors: | E Shembel R Apostolova I Kirsanova V Tysyachny |
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Institution: | (1) Ukrainian State Chemical Technology University, Dnepropetrovsk, 49005, Ukraine;(2) Enerize Corporation, Inc., Coral Springs, FL, USA;(3) National Metallurgical Academy, Dnepropetrovsk, Ukraine |
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Abstract: | The active molybdenum sulfide compound Mo2S3, 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 Mo2S3 have been obtained. Activation energy of Li+ migration in electrolyte (13.76 kJ/mol), charge transfer through the Mo2S3 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
Mo2S3. |
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Keywords: | Secondary thin-layer Li cell Electrolytic molybdenum sulfides Kinetic parameters |
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