Patent ID: 8784694

Claim:
A process for the production of a lithium manganese phosphate/carbon nanocomposite as cathode material for rechargeable electrochemical cells with the general formula Li x Mn y M 1-y (PO 4 ) z /C where M is at least one other metal such as Fe, Ni, Co, Cr, V, Mg, Ca, Al, B, Zn, Cu, Nb, Ti, Zr, La, Ce, Y, x=0.8-1.1, y=0.5-1.0, 0.9≦z≦1.1, with a carbon content of 0.5 to 20% by weight, comprising milling of precursors of Li x Mn y M 1-y (PO 4 ) z with electro-conductive carbon black having a specific surface area of at least 80 m 2 /g or with graphite having a specific surface area of at least 9.5 m 2 /g or with activated carbon having a specific surface area of at least 200 m 2 /g and heating to form the lithium manganese phosphate/carbon nanocomposite.