Anionic redox effect on the electrochemical performance of LLNMC–CeO$_2$–C nanocomposites
Nanosistemy: fizika, himiâ, matematika, Tome 9 (2018) no. 6, pp. 775-782
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Li[Li$_{0.13}$Ni$_{0.2}$Mn$_{0.47}$Co$_{0.2}$]O$_2$–CeO$_2$ composites have been obtained by coprecipitation with CeO$_2$ and by coating with ceria followed by
coating with carbon film. STEM analysis revealed the formation of 20–30 nm ceria particles on the surface of LLNMC grains in all cases.
Both carbon-coated LLNMC-CeO$_2$ composites and carbon-free LLNMC coated with 1 % CeO$_2$ demonstrated enhanced capacity values that
could not be explained by the charge compensation via redox of nickel and cobalt. 5 % CeO$_2$-coprecipitated sample demonstrated the most
intense anomaly in CV at U = 4.1–4.5 V associated with redox processes in the anionic sublattice of LLNMC and a larger charge transfer
resistance compared to other composites. The maximum values of Li$^+$ diffusion coefficient have been observed for the samples coated with
1 % CeO$_2$. The different electrochemical behavior of these samples could be explained by the different intensity of anionic redox processes in
the samples with different amount of nanocrystalline ceria.
Keywords:
Li-ion batteries, cathode materials, coatings, ceria, pyrolytic carbon.
@article{NANO_2018_9_6_a10,
author = {K. A. Kurilenko and D. I. Petukhov and A. V. Garshev and O. A. Shlyakhtin},
title = {Anionic redox effect on the electrochemical performance of {LLNMC{\textendash}CeO}$_2${{\textendash}C} nanocomposites},
journal = {Nanosistemy: fizika, himi\^a, matematika},
pages = {775--782},
publisher = {mathdoc},
volume = {9},
number = {6},
year = {2018},
language = {en},
url = {http://geodesic.mathdoc.fr/item/NANO_2018_9_6_a10/}
}
TY - JOUR AU - K. A. Kurilenko AU - D. I. Petukhov AU - A. V. Garshev AU - O. A. Shlyakhtin TI - Anionic redox effect on the electrochemical performance of LLNMC–CeO$_2$–C nanocomposites JO - Nanosistemy: fizika, himiâ, matematika PY - 2018 SP - 775 EP - 782 VL - 9 IS - 6 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/NANO_2018_9_6_a10/ LA - en ID - NANO_2018_9_6_a10 ER -
%0 Journal Article %A K. A. Kurilenko %A D. I. Petukhov %A A. V. Garshev %A O. A. Shlyakhtin %T Anionic redox effect on the electrochemical performance of LLNMC–CeO$_2$–C nanocomposites %J Nanosistemy: fizika, himiâ, matematika %D 2018 %P 775-782 %V 9 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/NANO_2018_9_6_a10/ %G en %F NANO_2018_9_6_a10
K. A. Kurilenko; D. I. Petukhov; A. V. Garshev; O. A. Shlyakhtin. Anionic redox effect on the electrochemical performance of LLNMC–CeO$_2$–C nanocomposites. Nanosistemy: fizika, himiâ, matematika, Tome 9 (2018) no. 6, pp. 775-782. http://geodesic.mathdoc.fr/item/NANO_2018_9_6_a10/