Solid Electrolyte Membranes Based on LiO-AlO-GeO-SiO-PO Glasses for All-Solid State Batteries.

Rechargeable Li-metal/Li-ion all-solid-state batteries due to their high safety levels and high energy densities are in great demand for different applications ranging from portable electronic devices to energy storage systems, especially for the production of electric vehicles. The LiAlGe(PO) (LAGP) solid electrolyte remains highly attractive because of its high ionic conductivity at room temperature, and thermal stability and chemical compatibility with electrode materials. The possibility of LAGP production by the glass-ceramic method makes it possible to achieve higher total lithium-ion conductivity and a compact microstructure of the electrolyte membrane compared to the ceramic one.

Thermal Conductivity of FLiNaK in a Molten State.

Although the thermal conductivity of molten salt mixtures is of interest for many potential technological applications, precise values are often hard to obtain. In this study, the thermal diffusivity of FliNaK was studied in a molten state using the laser flash method and found to be very slightly dependent on temperature. The heat capacity of FliNaK was measured using the DSC method.

Impact of LiBO Addition on Solid Electrode-Solid Electrolyte Interface in All-Solid-State Batteries.

All-solid-state lithium-ion batteries raise the issue of high resistance at the interface between solid electrolyte and electrode materials that needs to be addressed. The article investigates the effect of a low-melting LiBO additive introduced into LiCoO- and LiTiO-based composite electrodes on the interface resistance with a LiLaZrO solid electrolyte. According to DSC analysis, interaction in the studied mixtures with LiBO begins at 768 and 725 °C for LiCoO and LiTiO, respectively.

Physico-Chemical Properties of NaVO Prepared by Solid-State Reaction.

Sodium-vanadium oxide NaVO is synthesized via solid-state method and optimum synthesis conditions are chosen based on the data of DSC and TG analysis. The material synthesized is characterized by X-ray phase analysis, Raman spectroscopy and scanning electron microscopy. The ratio V/V in the sample obtained is determined by X-ray photoelectron spectroscopy.

Phase Composition, Density, and Ionic Conductivity of the LiLaZrO-Based Composites with LiPO Glass Addition.

The glass-ceramic composite electrolytes based on tetragonal LiLaZrO (t-LLZ) and cubic Al-doped LiLaZrO (c-LLZ) with the LiPO glass additive have been prepared. The electrical conductivity and microstructure of the t-LLZ/LiPO and c-LLZ/LiPO composites have been investigated. The phase evolution of electrolytes has been studied using XRD, SEM, and Raman spectroscopy.