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Cycling Performance at Li7La3Zr2O12|Li Interface

  • Applied Electrochemistry and Metal Corrosion Protection
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Abstract

Cyclability of the Li|Li7La3Zr2O12 interface was tested by voltammetry under externally applied potential difference. It was found that the solid electrolyte synthesized in the study contains a minor amount of an impurity in the form of lithium carbonate. This impurity forms, when brought in contact with metallic lithium, carbon that pierces the whole volume of the ceramic separator and produces a channel for a flow of electrons through the material, which leads to a poor cyclability of the solid electrolyte. A possible way to solve the given problem is via a purposeful replacement of the carbonate in the intergrain space of Li7La3Zr2O12 with another crystalline or glassy plasticizer that possesses an acceptable unipolar lithium conductivity (no less than 10–6 S cm–1) and forms, when brought in contact with metallic lithium, no electrically conducting compound or a compound capable of reversibly intercalating/deintercalating lithium.

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Authors and Affiliations

  1. Institute of High-Temperature Electrochemistry, Ural Branch, Russian Academy of Sciences, ul. S. Kovalevskoi 22, Yekaterinburg, 620219, Russia

    K. V. Druzhinin, P. Yu. Shevelin & E. A. Il’ina

  2. Ural Federal University Named after the First President of Russia B.N.Yeltsin, ul. Mira 19, Yekaterinburg, 620002, Russia

    K. V. Druzhinin

Authors
  1. K. V. Druzhinin
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  2. P. Yu. Shevelin
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  3. E. A. Il’ina
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Correspondence to K. V. Druzhinin.

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Original Russian Text © K.V. Druzhinin, P.Yu. Shevelin, E.A. Il’ina, 2018, published in Zhurnal Prikladnoi Khimii, 2018, Vol. 91, No. 1, pp. 70−76.

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Druzhinin, K.V., Shevelin, P.Y. & Il’ina, E.A. Cycling Performance at Li7La3Zr2O12|Li Interface. Russ J Appl Chem 91, 63–69 (2018). https://doi.org/10.1134/S107042721801010X

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  • DOI: https://doi.org/10.1134/S107042721801010X

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