Patent ID: 8906552
Filing Date: 2014-12-09
Classification: C01B,C01P,H01M,Y02E,Y02P,Y02T

Abstract:
1. Lithium iron phosphate having an olivine crystal structure wherein carbon (C) is coated on particle surfaces of the lithium iron phosphate, wherein, when a powder of the lithium iron phosphate is dispersed in water, water is removed from the resulting dispersion and the resulting lithium iron phosphate residue is quantitatively analyzed, a ratio of the carbon-released lithium iron phosphate with respect to the total weight of the carbon-coated lithium iron phosphate is 0.005% by weight or less, wherein the lithium iron phosphate contains 0.1 to 2% by weight of sulfur (S), based on the total weight of the lithium iron phosphate.