Patent ID: 9742006
Date: 2017-08-22
CPC Classifications: C01B,C01G,C01P,H01M,Y02E,Y02P

Claim:
1. A method for preparing a lithium iron phosphate nanopowder coated with carbon, comprising the steps of: (a) preparing a non-aqueous mixture solution by adding a lithium precursor, an iron precursor and a phosphorus precursor in a non-aqueous triethanolamine solvent; (b) reacting the non-aqueous mixture solution to prepare an amorphous lithium iron phosphate nanoseed particle; and (c) heat treating the amorphous lithium iron phosphate nanoseed particle to prepare a lithium iron phosphate nanopowder coated with carbon on a portion or a whole of a surface thereof, wherein the step (b) is performed under pressure conditions of less than or equal to 10 bar.