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Empirical formula for the concentration dependence of the conductivity of organic electrolytes for lithium power sources in the vicinity of a maximum

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Abstract

To optimize the compositions of liquid organic electrolytes for lithium power sources, it is useful to have the dependence of the conductivity on the lithium salt concentration in a convenient analytical form. An empirical formula was suggested on the basis of the modified Kohlrausch equation for the concentration dependence of the conductivity of organic electrolytes in the vicinity of a maximum. The accuracy of this equation was checked on solutions of LiBF4 in propylene carbonate; LiClO4 in ethylene carbonate; and LiPF6 in ethylene carbonate/diethyl carbonate (1: 1), ethylene carbonate/ethylmethyl carbonate (1: 1), and ethylene carbonate/methyl acetate (1: 1) at different temperatures. The calculated data are in good agreement with experiment for all the systems. The new empirical formula allows the determination of the maximum conductivity of organic electrolytes based on a few points with good accuracy, which is very important in choosing the electrolyte salt concentration in practice.

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Authors and Affiliations

  1. Institute of Problems of Chemical Physics, Russian Academy of Sciences, Chernogolovka, Moscow oblast, Russia

    A. F. Shestakov, A. V. Yudina, G. Z. Tulibaeva, K. G. Khatmullina, T. V. Dorofeeva & O. V. Yarmolenko

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  1. A. F. Shestakov
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  2. A. V. Yudina
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  3. G. Z. Tulibaeva
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  4. K. G. Khatmullina
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  5. T. V. Dorofeeva
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  6. O. V. Yarmolenko
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Corresponding author

Correspondence to O. V. Yarmolenko.

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Original Russian Text © A.F. Shestakov, A.V. Yudina, G.Z. Tulibaeva, K.G. Khatmullina, T.V. Dorofeeva, O.V. Yarmolenko, 2014, published in Elektrokhimiya, 2014, Vol. 50, No. 11, pp. 1143–1151.

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Shestakov, A.F., Yudina, A.V., Tulibaeva, G.Z. et al. Empirical formula for the concentration dependence of the conductivity of organic electrolytes for lithium power sources in the vicinity of a maximum. Russ J Electrochem 50, 1027–1035 (2014). https://doi.org/10.1134/S102319351411010X

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  • DOI: https://doi.org/10.1134/S102319351411010X

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