METHOD FOR SYNTHESISING A LIM1-X-Y-ZNYQZFEXPO4 COMPOUND AND USE THEREOF AS ELECTRODE MATERIAL FOR A LITHIUM BATTERY

Producing lithium containing compound (I), comprises (a) mixing precursors and ascorbic acid in an aqueous solvent, preferably glycol compound (consisting of ethylene glycol, diethylene glycol, triethylene glycol and/or tetraethylene glycol), (b) heating the mixture at a temperature of 100-300[deg] C, preferably 160[deg] C and a pressure of 0.5-50 bars, preferably 3 bars for 1-60 minutes, preferably 30 minutes and (c) washing the product with ethanol and water. Producing lithium containing compound of formula (LiM 1 - x - y - zN1 yQ zFe xPO 4) (I), comprises (a) mixing precursors of lithium, M, N, iron, phosphorus and ascorbic acid in an aqueous solvent, preferably glycol compound (consisting of ethylene glycol, diethylene glycol, triethylene glycol and/or tetraethylene glycol), (b) heating the mixture at a temperature of 100-300[deg] C, preferably 160[deg] C and a pressure of 0.5-50 bars, preferably 3 bars for 1-60 minutes, preferably 30 minutes and (c) washing the product with ethanol and water. M : transition element consisting of Co, Ni, Mn or Fe; N1 : doping element different from M and Q, preferably doping element consisting of boron or aluminum and/or a deficiency on the sites of lithium, M, Q, P and/or O; Q : transition element consisting of Co, Ni, Mn or Fe but different from M; x, z : 0-1; and y : 0-0.15, where sum of x+y+z is 0-1. Independent claims are included for: (1) manufacturing a composite material of formula (C-LiM 1 - x - y - zN1 yQ zFe xPO 4) (II), comprises the steps (a)-(c) as above per se, and (d) mixing the compound with carbon powder having a specific surface of greater than 700 m 2>/g; and (2) a lithium containing compound (LiM 1 - x - y - zN1 yQ zFe xPO 4) (I) obtained by the method and having form of platelets whose two dimensions are 20-500 nm and thickness is 1-100 nm.