Patent ID: 7348100
Filing Date: 2008-03-25
Classification: H01M,Y02E

Abstract:
1. A method for producing an electrode active material having the general formula wherein (i) A is Li or a mixture of Li with an alkali metal selected from the group consisting of Na, K, and mixtures thereof, and 0<a≦9; (ii) M is one or more metals, comprising at least one metal which is capable of undergoing oxidation to a higher valence state, and 1≦b≦3; (iii) XY (iv) Z is OH, halogen, or mixtures thereof, and 0≦d≦6; and (v) M, XY said method comprising: a) forming a first mixture comprising (i) a lithium hydrogen phosphate having a first average particle size, and (ii) a first metal hydroxide having a second average particle size, wherein said first average particle size is between about 70 times and 110 times greater than said second average particle size; b) grinding said first mixture in a jet mill to form a milled lithium hydrogen phosphate; c) reacting starting materials comprising said milled lithium hydrogen phosphate to produce said active material, wherein said starting materials comprise at least one source of alkali metal A, at least one source of metal M, at least one source of XY