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On the Effect of Carbon Additives on the Porosity of Positive Electrodes Based on LiFePO4 for Lithium-Ion Batteries

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Abstract

Using the small-angle neutron scattering method, the effect of conducting carbon additives (carbon black, graphene, and carbon nanotubes) on the porous structure of positive electrodes based on lithium iron phosphate (LiFePO4) is studied. To separate scattering at closed pores from scattering at open pores, the electrode is wetted with a deuterated electrolyte, which makes it possible to compensate for the scattering at open pores. The used additives are found to change the electrode porosity to different extents and affect the wettability of the material both through a different efficiency of the incorporation of the initial material into pores and due to a change in the matrix of lithium iron phosphate.

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Funding

This work was supported by the Russian Science Foundation (project no. 17-12-01540).

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Authors and Affiliations

  1. Frank Laboratory of Neutron Physics, Joint Institute for Nuclear Research, 141980, Dubna, Moscow oblast, Russia

    M. V. Avdeev, M. S. Yerdauletov & O. I. Ivankov

  2. State University Dubna, 141982, Dubna, Moscow oblast, Russia

    M. V. Avdeev, M. S. Yerdauletov, S. A. Bocharova & F. S. Napolsky

  3. Institute of Nuclear Physics, Ministry of Energy of the Republic of Kazakhstan, 050032, Almaty, Kazakhstan

    M. S. Yerdauletov

  4. Institute of Safety Problems of Nuclear Power Plants, National Academy of Sciences of Ukraine, 07270, Chernobyl’, Ukraine

    O. I. Ivankov

  5. Moscow State University, 119991, Moscow, Russia

    V. A. Krivchenko

  6. Moscow Institute of Physics and Technology (State University), 141701, Dolgoprudnyi, Moscow oblast, Russia

    V. A. Krivchenko

Authors
  1. M. V. Avdeev
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  2. M. S. Yerdauletov
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  3. O. I. Ivankov
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  4. S. A. Bocharova
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  5. F. S. Napolsky
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  6. V. A. Krivchenko
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Corresponding author

Correspondence to M. V. Avdeev.

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Translated by O. Kadkin

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Avdeev, M.V., Yerdauletov, M.S., Ivankov, O.I. et al. On the Effect of Carbon Additives on the Porosity of Positive Electrodes Based on LiFePO4 for Lithium-Ion Batteries. J. Surf. Investig. 13, 614–618 (2019). https://doi.org/10.1134/S1027451019040037

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  • DOI: https://doi.org/10.1134/S1027451019040037

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