SYNTHESIS OF NANOSTRUCTURED LITHIUM-ZIRCONIUM PHOSPHATE Russian patent published in 2025 - IPC C01B25/45 C01G25/00 C01D15/00 H01M4/131 H01M4/58 H01M10/525 H01M10/562 H01M10/565 H01M10/567 B82Y40/00 

FIELD: chemistry.

SUBSTANCE: invention relates to production of crystalline lithium-zirconium phosphates used as material in making lithium-ion batteries. Disclosed is lithium-zirconium phosphate of general formula Li_aZr_bM_c(PO₄)_d, where M denotes Ca, 1.0 < a < 1.3, 1.8 < b < 2.2, 0 < c < 0.3, 2.8 < d < 3.2. Lithium-zirconium phosphate is in the form of aggregated primary particles and has a BET surface value of 5–100 m²/g, a number-average particle diameter determined by static light scattering (SLS), d₅₀ = 0.03–2 mcm, and tapping density equal to 20–200 g/l. To obtain lithium-zirconium phosphate, flame spray pyrolysis of at least one metal precursor solution containing lithium carboxylate and zirconium carboxylate is carried out, where each of these metal carboxylates contains from 5 to 20 carbon atoms, organic phosphate and a mixture of solvents containing less than 10 wt.% of water. Also disclosed are the use of lithium-zirconium phosphate as a solid electrolyte component, as an additive in a liquid or gel electrolyte and as an electrode component of a lithium-ion battery, as well as an electrode and an electrolyte for a lithium-ion battery and a lithium-ion battery, including lithium-zirconium phosphate.

EFFECT: group of inventions enables to obtain lithium-zirconium phosphate particles having a relatively small size, high BET surface and low tapping density.

19 cl, 8 dwg, 1 tbl, 2 ex