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NANOSYSTEMS: PHYSICS, CHEMISTRY, MATHEMATICS, 2013, 4 (1), P. 105-112

FREEZE DRYING SYNTHESIS OF LiNi_0.4Mn_0.4Co_0.2O₂ CATHODE MATERIALS FOR LITHIUM-ION BATTERIES

K. A. Kurilenko – Department of Materials Science, M.V. Lomonosov Moscow State University, Moscow, Russia; kostik_msu@mail.ru
O. A. Brylev – Chemistry Department, M.V. Lomonosov Moscow State University, Moscow, Russia; brylev@inorg.chem.msu.ru
T.V. Filippova – Department of Materials Science, M.V. Lomonosov Moscow State University, Moscow, Russia; tania.filippova@inorg.chem.msu.ru
A. E. Baranchikov – N. S. Kurnakov Institute of General and Inorganic Chemistry RAN, Moscow, Russia; a.barantchikov@gmail.com
O. A. Shlyakhtin – Department of Materials Science, M.V. Lomonosov Moscow State University, Moscow, Russia; oleg@inorg.chem.msu.ru

For the first time, ultradispersed cathode materials LiNi_0.4Mn_0.4Co_0.2O₂ were obtained from freeze dried precursors with different anionic composition. The thermal decomposition of freeze drying precursors was carried out at 800–950 °C. By using XRD and SEM techniques, it was shown that particle size, crystallinity and cation ordering of Ni²⁺ and Li⁺ ions enhance with increasing thermal treatment temperature up to 900 °C. It was established that LiNi_0.4Mn_0.4Co_0.2O₂ powders obtained from nitrate precursor at 900 °C possess the highest degree of crystallinity and cation ordering.

Keywords: ultradispersed powders, freeze drying, cathode materials, lithium-ion battery.

UDC 546.05, 546.06

PACS 61.05.cp, 61.72.Ff

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