Nanocomposites and nanomaterials

Synthesis of Li-conductive nanoparticles with NASICON-type structure
Lisovskyi I.V.1, Solopan S.O.1
1 Vernadsky Institute of General and Inorganic Chemistry of the NAS of Ukraine. Prospekt Akademika Palladina, 32/34, Kyiv- 03142, Ukraine. 
E-mail: i-lisovskii@i.ua

The development of autonomous battery packs is one of the important energy problems. Nowadays, typical batteries are based on a liquid electrolyte. However, they have number of disadvantages, including restrictions on their design and size, limitations in the operating temperature range, and also dangerous because of the threat of leakage of the electrolyte [1-3]. It is possible to achieve miniaturization of current sources using a solid electrolyte. In turn, this will provide more space for manufacturers of autonomous electronic devices. In addition, the use of batteries in medicine (for the supply of implants) will become more safety by eliminating the threat of leakage of the electrolyte using a solid electrolyte. Therefore, the synthesis of lithium-conducting materials, which can be used as solid electrolyte for solid-state batteries, is relevant problem.
In this work, the effect of methods of synthesis (solid-state method, sol-gel method, precipitation from solutions) on the properties of nanoparticles of Li-conductive material Li1.3Al0.3Ti1.7(PO4)3 (LATP) with NASICON-type structure was studied. The structure of the received nanoparticles, their phase and microstructural features were investigated. The possibility of application of synthesized materials for the production of ceramics and for creating thick films using the method of "tape casting" was studied. The conductivity of ceramics and films obtained based on synthesized nanoparticles was investigated. It was shown that the conductivity of thick LATP films is comparable to the conductivity of bulk materials.

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