MANGANESE-CONTAINING METAL PHOSPHATES AND METHOD OF PRODUCING THEM Russian patent published in 2017 - IPC C01B25/37 C01B25/45 C01G45/00 

FIELD: chemistry.

SUBSTANCE: invention relates to a new manganese-containing (Mn) phosphate of type (Mn_xMet_y)₃(PO₄)₂·3H₂O, wherein x+y=1, the ratio Mn:(Mn+Met)=x:(x+y) is ≥0.15 and Met represents one or more metals selected from Fe, Co, Ni, Sc, Ti, V, Cr, Cu, Zn, Be, Mg, Ca, Sr, Ba, Al, Zr, Hf, Re, Ru, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu. In addition to the above, phosphate in X-ray powder diffraction pattern has peaks at 10,96±0,05, 12,78±0,17, 14,96±0,13, 17,34±0,15, 18,98±0,18, 21,75±0,21, 22,07±0,11, 22,97±0,10, 25,93±0,25, 26,95±0,30, 27,56±0,10, 29,19±0,12, 29,84±0,21, 30,27±0,12, 34,86±0,21, 35,00±0,20, 35,33±0,30, 35,58±0,10, 35,73±0,12, 42,79±0,45, 43,37±0,45, 44,70±0,15 and 44,93±0,20 degrees 2θ, based on CuKα-radiation. There is also a description for the process of their production, which is energy efficient and relatively simple to implement and whereby phosphates in high purity can be obtained.

EFFECT: invention provides a cathode material for lithium-ion batteries, particularly those from which the cathode materials can be manufactured with high energy storage density.

21 cl, 9 dwg, 1 tbl, 20 ex